I only have seat time in a Miata chumpcar. It's an ex spec miata that was totalled in a crash years ago and became a bare shell. We put junkyard parts in it including an engine with 130,000 on it and won the first chumpcar 24 hour race in Portland in 2009. We won because we did nothing but put gas and oil in the thing. It probably helped we had 6 experienced racers and me, an inexperienced racer. We all race formula vees so the whole momentum car thing is something we all get which works well in endurance racing. It had a burnt valve at the end and we went through the head and took 2nd or 3rd in the Spokane 2010 24 hour race. We did do brake pads on that one. Bulletproof is a good term I think. I wouldn't hesitate to own a Miata if I had the chance.
Our car in Portland:
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Jerry
1983 911 SC/Carrera Franken car, 1974 914 Bumblebee, 1970 914-4, 1999 323ti
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