To put the importance of a stiff structure into perspective, consider that the typical unibody chassis of the muscle car era was only designed to handle 300 or so gross horsepower on skinny bias-ply ...

We've got a big motor in the works for the CC/Rambler project car, and big motors mean big twist. Add that twist to a flimsy econobox body and you get a bent race car. That's where frame connectors ...

You can dramatically stiffen up your unibody Mopar with a set of weld-in subframe connectors from Reilly Motorsports. We show how easy it really is on our 1968 Plymouth Valiant project car.