i would go with the stroker, & to get that kind of hp the 440 source heads will need port work,out of the box they flow about 267 cfm,you need about 290cfm
if your talkin a real 600 hp,that would make a 3300lb car go 10.3@130

Last edited by csk; 11/07/12 05:00 PM.
1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5