Well the last Backdraft that sold on Bring A Trailer went for $46,250. It had a Roush 402R with 1400 miles.
https://bringatrailer.com/listing/19...cobra-replica/
Here is another that did not sell, but was bid up to $68,000. It had a Roush 427R with 85 miles.
https://bringatrailer.com/listing/20...t4-gt-replica/
Here is another that sold for $58,000. It had a Roush 342R with 502 miles.
https://bringatrailer.com/listing/1965-shelby-cobra-69/