Anybody go from performer to an rpm air gap

Steve - Thank you for the tip. I've put the gasket on the head and then on the intake assuming that the bolt holes would line it up. Well next time there will be scribe marks!

Dave - Yes. The LD340 has a notch in the plenum divider. And in the Direct Conection tips for drag racing, they had best results removing most of the divider and then depending on the carb, notching the carb's boosters. It doesn't say so in the reprint, but my assumption is this was for stock or super stock classes and because 3500-7000 rpm was the primary focus!