Can they not just be put over the factory rubber gromet/gasket?I'm not sure the Previous owners reasoning for using the RXT but if it didn't already have one I would have put one in for sure. I've used a RXT on all of my cobras with great success. Never used a RST. My thought process is "room to grow" and the clutch is like butter.
You know I didn't even consider anything like that. I'm going to have to go back and rethink this now. I'm glad you pointed it out before I had the whipple put on. HAHA.