Assuming they are not Chapman stage 6's......

Every set I've had in the shop(and there have been quite a few) have needed a bunch of time and $$$ invested.
Nowadays, I would put them at the bottom of the "bang for the buck" list.

68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads