PROFORM BODIES

my car wont go over 6200!!!....i have a fuel cell,1/2" line,holley blue,2 3/8 lines to the carb and i keep leaning out my plugs!!!!
i was at the track last week and i even put in 94 jets all around and my plugs look like there sandblasted!!!

80's...lean and 84's lean last sunday...it seems that ever since we put the body on ,ive had trouble!!
i even had to weld the weights on my dist. cuz it wouldnt even start or idle!!