I run a quick change on the street in my 40 pickup. It is a Halibrand V8 style using the original 40 end bells. They are loud because of the spur gears in the back cover, but I kinda like the sound. I can change rear end ratios in about five minutes, that said you will find that after playing with it a few times you will find a ratio you like and never change them again. I suppose if I get brave enough to take it to a meet far away I would put taller gears in after getting out of NY ands Pa and that would help the fflathead alot. If I were to do it again I would put in a Mitchel, it would be less cost and give better performance, but wouldn't look as cool.
