well the heads i got for sale i was going to use in a n/a combo small stroke big bore chevy engine it was going to be like 360ci with 16-1 compression and a 1050 carb and the car i was going to put it in had to be 2950 and i was planning on running in the 8s n/a.the class rules said i had to use a 23 degree chevy head witch is old school if i where u i would do a 434 with sb2.2 heads.if built right it could make around 900hp n/a with 14.5-1 compression then toss in a 300 fogger system and u should be in the mid 7s and high 7s or low 8s n/a

have fun