M561 gama goat wheels on m715

Can some one give me the cut and dry on running gama goat wheels and tires? I recently came into a cheap set of rims and wheels from the m561, no center plate adapters yet. Ive had people tell me I'll need to do SOA conversion and/or add body lift, while other tell me they fit stock configuration and just rub if you full lock while traversing in crap conditions. While needing to do these conversions isn't a big ordeal, i need to replace a body mount that disintegrated on me anyway, if it could save me a dollar and some headaches. It would be appreciated. Does anyone have a lead on centers for the wheels? Thanks

I searched the old zone messages and got this:
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Stock Wheel Dimensions: Lugs are 5/8"x18TPI. Center hole is 5.5" diameter. Backspacing is 5.5". Width is 6.5 inches. Bolt pattern is 6 lug on a 7.25" spacing.

STOCK RIMS- NO LIFT
900x16 ndt 34"
900x16 Co-Op Grip Spurs 36" 30psi (max50)
Yokohama Geolander M/T 315/75x16. 36" tall.
michelin 1100x16 38" 60psi (max80)
Super Swampers 16/36/12.5 about 35"tall
Super Swampers 38.5x1100x16's boggers 37" slight rubbing
Super Swampers 37x13x16 Boggers just rub the spring at full steer with just a little of the largest lugs.
Super Swampers 38-13x16 TSLs"nubb -nubb-nubb against front leaf spring at full stuff/full cramp, but no hard-hits as of yet.
Buckshot Mudders 305/85R16 (36x11x16)
Buckshot Mudders Q78 16LT

CUSTOM RIMS- NO LIFT
Super swamper SSR 37x12.50's fit great with no rub anywhere Diamond 16x10 wheels w/4.5" backspace.
Gamma Goat 1100x18 NDT's with adapters
NDT 9.00-20 tires on 6X6 riveted rims with alot of work. Rims MUST have rivets removed, be flipped around and reassembled for these to work. Also, the M715 pattern must be drilled into them. They will fit on a stock, non lifted M715. See the Louie715's truck in the Members Gallery for pics of his truck with them on it.

STOCK RIMS- SPRINGOVER

STOCK RIMS- BODY LIFT

DANA60/14 Bolt-NO LIFT
michelin 1100x16 38" 60psi (max80) on 16x7 wheels 3.5" backspace
BFGoodrich All Terrains 35x12.5x16.5 on 16x8 wheels 3.75" backspace

DANA60/14 Bolt-SPRINGOVER
39.5"-15-15 Super Swamper TSLs 15x10 with 3.5" backspacing very slight rubbing of the front tires on the fender edges at full compression and the steering stops need to be adjusted to keep the lugs from rubbing the leaf springs.

2.5 GMC axles - SOA
53" Michelin 16.00x20 with split rims 3" traction lift
42" 1100x20's NDT's on single style deuce wheels fit with virtually no rub and a lot of flex still.
45.5" (395/85-20) Michelin XML's hubs out, 20x10 wheels, 6" back spacing, 45.5"x 15.5" will need considerable fender and front cab corner modifications for steering and articulation.

Note: This thread will be edited to include more information as it is posted.
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I can't remember the last time we had a good old gamagoat tire discussion, lol! Do they even make tires for the gama goat anymore?

Wow thanks, always forget about the old zone, and yes they still make them new, cost about 150$ more then the stock size is from coker. They do limited runs every few years. And nos still pops up. Also 13.00-18 is available but these are bigger then the 11.00-18. Ive been interested in a set of gamas for a while abs to find a local person with them he couldn't get rid of and was about to head to scrap with old stock but solid tires, i couldn't say no. From what i found there is alot of back and forth on the subject. The main thing i was curious about really is how well do they fit, and what could be better. I heard they are HEAVY when compared to the stock size. And was curious if i should do a body lift, and how much if so. I have two blown out body bushings that need replaced any ways so if I'm already there should i throw a one inch spacer in there? I can't find a company that responds to my emails that used to make the adapters so the appropriate specs so i can have some made would be appreciated.