You can find them on auction sometimes, the collection is not that large. I am missing a 69 Torino and a few others. The Corvette is also one of these snap kits but this one does not match the chassis. The body is too narrow and the motor hood touches the electronic board. I will try on a spec 2 as the electronics seem to be smaller.
TRC, Ive tried with the bitchar chassis on the Corvette body but its just to much work! The Bit is very very small you can put 2 of them inside the Corvette

We need something in size between the Epoch and the BitChar G.
How about a 1:87 HO body on a bit chassis ?

BTW once someone release a full propo HO car, there will be a huge demand for Herpa and other brands of very nice 1:87 cars. Best off all, they are made of plastic! Check that 1:87 Mustang