im running a weber 38 on my 84 it runs great, the only problem i had was with the throtle linkage because my factory return sping wouldnt quite return it to the throttle stop. i have a spring on it now but im going to go to a yard and get some linkage that isnt bent to hell. as for the carb i bought, it works great right out of the box. i simply set the idle and drove off.