I'm dropping a 455 in place of the 403 in my 77 Cutlass Supreme. It has column shift automatic, PS PB A/C. I've heard good things about the Blackjack and the Hooker Comp (not super comp).

Has anyone had good or bad experiences with these or others?

 

Don't know about the Blackjack, but the Comp (not Super Comp) are the biz, from what I've heard.

I'm running DynoMax Ceramic Coat headers...look good after 5 years!

C.J.