Welcome from Colorado, Suzy. I don't have a CJ cause I don't fit in them (and I really like the CJ-3B)! I do have a 63 Willys Wagon with a SBC 283 V-8 with a Stock Drive Line, and a Heavily Modified 57 Willys Pickup with a Fuel Injected 350 V-8. I do know that the Buick V-6 is VERY Popular to put in CJs (and lots of other Vehicles). There are also MANY V-8s in CJs from Small Blocks to Big Blocks V-8s. So do a little Research on the Internet about What Upgraded Motors work well in Jeep CJs. I'm sure that there are some V-8 CJs on this Forum and hopefully they will jump in here and give you some really good info about this! Post some pictures of your CJ-2A when you get a chance. John (aka: Pivnic)