Hi guys, i'm a new member here because i just bought my first muscle car: a 1971 challenger RT which was a 383 car, but now has a mild 1972 440 in it. The car has been sitting for 10 years, but i got it to flash up for a few seconds. My eventual plans for this car are to have it make around 500 hp and 500 ftlb if i could. I want to do it on a budget though, because i'm fairly young and i don't have a lot of extra money. I've been doing some reading about the 440 source heads and the edelbrok performer heads. I just found a new set of Edelbrok Victor 440 heads model 77919 heads for a deal. The seller is asking $1400 Canadian for them. Parts here in Canada are quite a bit more than in the US. Do you think i should jump on these, or should i go another route for a budget build?