501 Series Performance Head W/ seats and guides 42 Intake 37.5 Exhaust Type-4 This is a set of

This is a set of brand new stock 77mm VW Type 1 40HP 1200cc pistons and cylinders

Requires machine work to install

They can be used as intake/exhaust retainers in almost any VW Type 1 head casting

New Chromoly Flywheel

2:1 with the 70

501 Series Performance Head W/ seats and guides 42 Intake 37.5 Exhaust Type-4 This is a set ofMade from an AA 501 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 501 Series Castings come STD with: Increasedmaterialat the intakesurfacegivingyou theabilityto make much bigger ports. Amodernized Combustionchamber, for increased head flow & performance. AsecondFull Fin, soyoucanFlycutyourheads deeper to achieve almost any desired Head CC volume needed. Blocked