i would like to know if anyone have tryed these jon kasse cylinder heads if so let's me know what's up with them.i read a article on jon kasse web that this heads made 511hp on a stock 1989 302 at 7800rpm and 586hp on a ford crate 392 engine,with a victor jr. intake, 256 degree soild roller -comp cam-and a 750 holley carb.let me know what you think before i spend 1700.00 for these heads. i really mean start saving for them.
