I wouldn't touch it. I've had my 1977 Pontiac q-jet on the dyno back to back against a dyno tuned HP950, and a few 850 Demon's and made more power. The castings have never been touched anyplace by a grinder or sanding roll. Since that carb easily supports close to 600hp and over 600ft lbs torque, little if anything to chase around with most engine set-ups......IMHO......Cliff