72 Swinger engine swap: power per dollar?

Yea my J's are like 71 or 72s. So they will bolt right onto a 87-91 Roller Block with no probs and what I wanted to do cause I need another block anyway. So figured just get one that was built to have a roller valve train.
I just cant find any near me

Sorry for the thread jack BigBlockBanjo Just clearing up some stuff.

Only major change to the suspension for a BB would be torsion bars (If you want to cause many just use the Slant 6 or Sb Torsion bars) and not much else. im not changing the suspension at all for my valiant but has bigger bars from factory since was SB A/C car.

Also Find a 73-76 Sb Spool mount k frame for it. The Spool mounts are much better than the 72 down biscuit mounts.73-76 Spool mount Sb K frames are different than Slant 6. So if you go this route then make sure you get the right one and if you want it to handle better even with a SB I would suggest changing to .99 or higher torsion bars since you would already have the whole suspension apart and have to remove the old ones to do so.

I like my vehicles to handle as though they're on rails. So I would upgrade suspension.