Hello...I have a 1995 silverado with a 5.7L TBI and I believe a hydraulic flat tappet cam. I was wanting to change over to vortec heads, with a dual plane vortec intake and keep my TBI using my stock ECM and wirring. My question is would I be able to still use the cheaper flat tappet style lifters and cam or would I have to change over to a roller style cam and lifters with the vortec heads? And if so could I do this with my 1995 block or does it make a difference? I would like to use the cheaper cam and lifters as I am working with a small budget
Or would it just be easier and cheaper to get a 1996 or newer 350 shortblock then add my already owned #906 cast vortec heads and dual plane intake with my stock TBI?
Do I have to stick with the stock cam style in either 96' or 95' block?
Any help on this would be greatly appreciated. It seems like every where I look I get a different story

Sorry if this sounds confusing im not really a Chevy guy.
Thanks for any help