go to the comp cams website and pull up the cam card for part # 12-214-4
that'll tell you what parts you'll need. You need the springs because with that kinda lift they will coil bind and the rocker arms slot will allow it to hit the stud. Probally has already bent the pushrods. the heads hafta be machined in the valve pockets for the longer springs. Sounds like you might be in a little over your head so buddie up with who ever does the machine work on the heads to help ya figure the valve to piston clearences.
Gotta go for now. Oh and watch that Techie guy,He's about the smartest engine & numbers guy around,Butttttttttt he'll gitcha in trouble with your woman...