5.9 build

These heads are from pie racing with level 1 porting 2.02/1.60 valves and some intake work done
Yup you can see the bigger valve and a small chamber relief cut. As long as they sized the bowls coreectly for the bigger valve just run what you have. Probably arent going to hit 500hp, but will at least be within spitting distance of 450 with your stroker.