3550lbs in this video (Duster, not Magnum).

6.1 based - good heads - e85- no intercooler - 22lbs of boost

I drove this thing for 3 hours nonstop last year at Woodward. And it was like 90

All the way from Pontiac to the start of the cruise and back to Pontiac.

https://youtu.be/SMrVEbdLkwo