66 Plymouth Valiant help!

Thanks guys for all of the advice! I was genuinely worried about this, but it doesn't seem so bad now.

Looking at the measurement for the A body to B body swap, looks like I'll have just under an inch increase on either side. Doesn't seem bad at all.

@ Bonehead - That does sound like a good deal. I'll keep an eye out for the Ford rearend, but I want to try to keep it mostly Mopar.

Thanks again guys!