I had the moulded rubber one from Jim Carter. I used regular multi-purpose silicone, and once it was on I pulled the cowl vent down tight and left it there for a couple days. As was said, wipe it down with thinner or some other solvent first, and there's no reason it shouldn't stick.

Mine seals great in the rain, no problems. Maybe sure the small "lip" goes up.


1946 GMC Pickup - S-10 Frame, 455 Buick, TH400, original patina.

My 46 GMC on Photobucket