On the type 3 tin . . . if you don't have any DON'T BUY THE EMPI BRAND! Been there, done that. It would have been easier to start with a flat piece of sheet metal, tin snips and hammer and make my own. After quite a bit of cutting, bending, cussing, etc., I got one side on in one piece. The other side ended up in two pieces and was held in place with bailing wire. After all the trouble, I couldn't really tell any difference in the engine temp with the tin in place.