"Ron, this is Lewis. Please forgive me for not getting back sooner, but I have been busy in my work for the church I serve. I checked both my 65-66 parts manual and my 67-72 parts manual. This is what I discovered: 1964-6 body mounts are p/n 3794779, w/dimensions of 1.76" w; 3.00" l; 0.92" thick, needing 8 (up & lwr same). The 67-8 p/n is 3909351 up & lwr, 69-72 uses 3909351 as the lwr, but p/n 3946246 is the upr. No dimensions are given for these cushions, and it seems that the frame changed in '69. Qty's in 67-8 are 16, with 69-72 requiring 10 of each. If you have dimensional access to the later cushions, these 64-66 dimensions should help you. Like you, I suspect that the 67-8 cushions will work, but there is no superseded p/n's between the body styles. I can tell you that years ago I bought cab mounts for my 65 and the p/n's had superseded to the mounts for the 67-72 cabs. I hope that this info is of some assistance in answering this question.
the dimensions sound right. the .92" high includes the raised section around the bolt hole.
The measurement excl the raised section is between about .73-.74" high."
I have no reason to doubt Lewis as he is usually right on with his parts
now I have not seen the new ones, but if the centre hole is larger(and I don't know whether or not it is), it does seem to be an easy fix as I stated above; there are always times that things have to be modified to work a little better
ron
