Seals
Sealing up windshields is another problem area. A combination of thinner replacement windshield glass and low-quality seals will make for a leaking windshield every time. Thankfully, there are some good seal manufacturers out there–Steele Rubber Products, for example.
Whoa, Pony!
To make our Mustangs and Shelbys work on track, we upgrade the front brakes to those from the 1967 Thunderbird. That gets us 11.87-inch rotors versus the stock 11.3-inch rotors. The rear drums are sourced from a Ford pickup truck and are 11 inches versus the stock 10-inch drums. But we vintage race and have to use factory-type suspension components, and they work just fine. The real trick is to make sure that you’re using new-old-stock-equivalent suspension components, not some of the new stuff available that’s made overseas. Or you can just buy name brand US stuff and cheat like everyone else.
