who has them and did you have to modify your pistons to accept them? it a 93 with notches in the piston and the heads have 2.02 intakes and a max lift of 489, with 1.6 rr,s
It depends on how much lift you're planning on running whether or not you'll need to clearance your pistons. Because the TW heads have rotated valves as opposed to inline valves on a standard head, you can run the 2.02 intake valve without additional notching needed.