I was thinking of using a set of Vortec heads . They are between $475 and $650 . Or a set of World S/R Torquers I can buy the bare ones and assemble them myself . I also have a set of good #186 Fuelle heads 194/150 64CC that I might pin the studs and use . If I use the Fuelle heads then I cans spend more on the camshaft and intake set up . What camshaft and intake do you have in mind ?