I once read that either the 101 or 105 trailer canvas was a close fit for the M-715 Bed cover..........I only want it in case of rain on memorial day at the cemetery, we drive our military vehicles to about 6 local cemeteries for taps and firing.........I do not want to spend the big bucks for a fitted cover as I only put the cargo rack up on the days that it rains on Memorial day........Appreciate any advice from some one that knows........thanks guys.........