Best way to spend last 600 bucks

Yea, I think youre right about the converter This will primarily be a driver mostly back and forth to work 14 miles round trip and down to Old Town in Kissimme once or twice a month about 80 miles round trip.. I want something that will fry the tires on demand. The converter was a gift from a buddy of mine so I thought I'd at least try it. If it's too much I thought I'd try a /6 converter as I have one of those lying around.. I've been told that a torquey 360 will lock up a /6 converter at about 2300. Have you heard anything on that?? Not sure what you're getting at about the Proform I may have some what with the carb???