VINTAGE ROAD RACING QUESTION

The Challenger T/A's and 'Cuda AAR's all ran destroked 340 6 pack engines in 1970.. They were fragile back in the day, but ran with the best of the rest. Maybe some info from Dan Gurney could help for a period correct race car. I have several old books. The infamous "D" Darts of 1966 and 1967 would be worth researching, too. They were very competitive back in the day. Paul.