Hi Al
i would have to look at regs but classic thunder may be to modified dont you think? that red chevy looks like my opel manta i had, same colour as well that was tail happy with a (heavy)2ltr lump would be fum with 5.7 i recon. pehaps you should have taken up drag racing Al if it only wanted to go straight. by drag racing i mean in the car and not a dress of course