I guess im not to overly surprised that the RPM is too tall. I would consider the aluminum performer but since I have the stock cast iron, ill go with it and deal with the extra weight.
does anyone have more input on carbs? as previously mentioned, I can get Cliff to rebuild my Qjet or another option would be to go with something after market. Im leaning toward the Qjet as I think it would be more compatible with the cast iron intake. plus, as mentioned by Dr. Drivability, the Qjet would be best.