70 Disc vs 73 disc

thanks for the info

This will be a long term project
was looking for buckets and console to make it factory,change it back to Auto
but since
We are putting the 73-up discs and narrowed BBP rear axle in,
decide to leave it bench/pistol grip
15 x 7 front
15 x 10 rear
guess, I'm trying to replace the 340 4-speed Demon
had many years ago
getting ready to replace the Quarters, rear valance/ widen the tubs
got lots of new chrome, bumpers etc, after paint

bring it back alive..






The goal- yellow/black