Hey Highmark....From the sounds of it they pretty much bolt right in, But me being a machinest you want to make sure you check the springs for coil bind,seat press...ect. valve retainer to seal/guide top...Carefully read the inst.
If I was doing the job I would be installing new cam followers and probly a good timing set and rail's depending upon wear, And it's always a good idea to dial the cam in
I must say though I have a stock engine fmf Q and a ported edelbrock, And that carb alone woke my pig up..I can't imagine what it would be like with another cam...Crazy good ...
I would think to if your putting a bigger cam in it, it would be a good idea to put better header tubes on it...jst my 2 cts