Not even the yoke seal leaked? Wait a minute, did this trans have fluid in it. Why I oughtta. LolThat's an interesting "rule" that from my experience isn't true across the board. I had solid motor mounts and a solid trans mount (4 speed) in my 64 Chevelle. When I sold the Chevelle as I roller I put the 350 motor and trans in a 67 Camaro I got. Never had any problems in either vehicle.