LOUDexhaust

I have finally decided to do a gt40 build up since my junkyard has some 5.0 explorers. So I will take the heads and intake and the cost should be $84. I've been doing some reading and 1.7rr's and steeda #19 cam seems to be a good combo. Would the junkyard have any useable 1.7rr's? Doubt there will be any cobras there. If I go this route, can I use the stock pushrods? And should I have the heads freshened up(springs,any machine work)?

This will all be going onto a stock 91 block with 100k miles.

Stella94GT

if you get the heads and intake for that cheap, a good port job would be nice and if your gunna run a different cam it would be a good idea to match the springs to the cam. i was talking to this guy who owns a machine shop and instalation place and he was sayin how by just doing the cam alone, your not getting the full effect with out the correct springs.

89 5.0 vert

ok, so ive been reading a couple of threads about this... and it sounds pretty interesting. what all would you need to do to make the intake, heads, and throttle body work?? i know you mill down the heads .030 so you dont lose compression, but if ya runnin almost a stock motor in my case which is C.A.I, high flow thermo, 16 inch electric fan,flotech shorties, and 2.5 inch exhaust 3inch x pipe and a dump before the rear tires and thats it. what would i need to run these bad boys after ported and freshened up? also what kinda increase in power would this be? the only thing i could guess is more fuel which would prolly be 24lb injectors with a 190lph pump and maybe a regulator. plz help with this cuz im really looking into doing this set up. thanks