A guy I know has a 306 with 385 HP for sale.It has a Novi SC with 16pds of boost.I only want the long block,comes with ported gt40 U & L,with gt40X heads.It only has dyno time on it.It made 618RWHP with the super charger.The only thing that scares me is the Hyper. pistons. Any input would be greatly appreciated.