I have a 1948 Ford F1 with a 226 flathead 6 cylinder with a 4 speed T8 spur box/crash box transmission. Motor blew up. I have a Cummins 4bt motor in my shed for years now. My truck has been a farm truck all its life, and I love the unsynchronized 4 speed. Great for what I use the truck for, and I love the Cummins motors.. with that being said, can you swap in a Cummins 4bt with the t8 crash box 4 speed? I'm aware of all the modifications itd take to put the 4bt in, just wondering if the bell housing, clutch, flywheel, is available for that trans? Keep in mind this truck is a farm truck. Never sees speeds over 45 mph. Is it possible? Am I crazy? Give me your opinions!! Thanks!