Best way to spend last 600 bucks

That seems like too much convertor for that cam.

if you drive this on the street...you're gonna be wishing you bought the tight convertor...been there- done that.

talk to crackedback on the carb, you may have some problems with that proform add on.

pretty much headers are gonna be the most torque/hp gain and less you buy higher ratio rockers, thats it.