Chevy says they will work on the 283. But they were designed for and work best on a 350 CI engine. I don't know what "cheap" is in your book. But I would put the money into the heads you have. Porting, hardened seats and stainless valves will do a lot for you and the motor will retain it's traditional look.

When youe say "set up" I'm hoping you mean heads, valve covers, intake, intake bolts, intake gaskets, head gaskets, rocker arms, and push rods. None of your 283 equivelents will work. And if your cam has any lift at all you need to factor in some machine work. Valve stems need to be cut down, narrowed, and cut for new seals. And the spring pockets will need to be enlarged for the new springs you will have to buy. And then there is the issue of screw in rocker studs.

And, like 76GMC1500, I wounder about valve to cylinder wall clearance.