Seeking caged 914/6 race chassis roller.

Long story short, my current car has endured 45 years of racing. It’s been bent, bandaged and band-aided to the point that I might be better suited to find a built tub to transfer my drivetrain, running gear, suspension, etc., to versus continuing to band aid it.

If anyone knows of a solid, caged race chassis I’d like to hear about it. It doesn’t necessarily have to be a roller, given I have all the parts to make it roll.