save your money & buy the Trick flow heads, you can get them with the correct springs for your cam, depending on what HP level they have them in standard port TF 240, Max Wedge port TF 270.

Last edited by csk; 06/28/19 09:40 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