Twin Turbo 1971 Scamp Project

Umm! I don't know if you have one but my SRT 6.1 barely gets 11 mpg and thats driving it easy around town! It might get 14 on the Highway.

I am thinking its got maybe 450-500 rwhp at best!

No I don't have one. Therefore I don't know. Thus, i asked the question. I also see that your SRT doesn't have factory tuning. I'm sure that doesn't help