Converter change ...mpg?
 

Ok, on my gn I couldn't tell a mpg difference because I just don't drive it enough. On the interstate however it appeared the same since I stuck with a lock up. So I was thinking about something like a vigilante or yank 3200 for the camaro. What about fuel mileage in these cars? It's still s lock up so I would guess on the interstate it would be fine, yes?