You can make your own or if you talk to one of the stock car chassis fab houses like Laughlin or Port City you can probably get something made. You would need to spec out exactly what you want with all dimensions and they may not be cheap.
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1970 Mach I 380 Dry Sump + lots of mods
1990 C4 Corvette 400 in solid roller
1965 Corvette - back to life some day
1970 1/2 Z28 project car