GT40-P heads
Reply #7 –
With porting, 1.94s, and 1.54s they would be fine for a mild motors. And if you're going from stock E7s or E5s, they're a big improvement. Not everyone can afford after market heads. But be careful, having oversized valves installed and porting can cost more than after market heads. It's just cheaper for someone like me cause I did it for a living and I still have resorces to a shop to do my own work.