Thanks for the link and reminder rumble/ ratrod
OP you can overpower that chassis with a stock 360
do the chassis first
if strip stock or 6 cylinder bars
if on the road the largest you can find
good luck on that 8 3/4 width/ spring perches almost easier to build a 9" Ford mustang or find something else that fits
thanks for being on board with the connectors- we bent more than one of those up
even with the 413 we had to keep a wide torque band with the stock big heavy three speed even more so than the TF we switched to
stock cam was too long so we used special Isky then Racer Brown