340 swap

I swapped a 360 into my 318/727 combo. The question is.. are you keeping the 904? If so driveshaft should be the same.
A range of torsion bars are available for upgrades, i havent changed mine yet, but some of the guys on here recommend .089 (383 A body size). If changing torsion bars, get advice on front /rear anti-roll bars. set them up as a combination.