Project86- My first (and probably not the last) Rebuild

[project86]

ok so i think i may have found some s5 irons a friend of mine has here. should be able to pick them up for about 150 bucks, then ill clean them and lap them and have them ported. im curious if i can use a s4 front iron though instead because i think i would rather use the mech. omp instead of the 1500 dollar electrical one. i am for sure gonna buy new housings and im debating if i want to use the s4 turbo rotors or if i also want to buy the s6 rotors my friend has too. i know i wont be able to run as much boost on pump gas without messing with timing( advice from murray if i understood correctly) but they are local which makes things alot easier on me as far as money and availability obviously. he wants 250 for the rotors? and suggestions are welcome.