502 Series Performance Head W/ seats and guides 42 Intake 37.5 Exhaust opt-shuffle-pin-upg This is a new set

This is a new set of Big Bore 86mm Porsche 356 pistons and cylinders

or red anodized with permanent laser-etched numbers

and hook your tie-down to these

Patented skewed blade design results in high efficiency with lower noise

Part#: 008 VR 503T

502 Series Performance Head W/ seats and guides 42 Intake 37.5 Exhaust opt-shuffle-pin-upg This is a new setMade from an AA 502 Series Casting, It is set up to build the performance Head of your needs. It Comes with Seats 42x37. 5, Guides, with a 12mm plug hole. The 502 Series comes with our Stage 2 porting with a modernized combustion chamber for increased head flow & performance. There is a second Full Fin, so you can Fly cut your heads deeper to achieve almost any desired Head CC volume needed. Blocked off rocker stud bosses, to eliminate the O ring and