I used the standard insulator block and rotated the carb 90deg from stock. Then cut a pulse groove in the insulator for the pump pulse hole on the carb. You could also use the crankcase vent line with a "T" and run the line to the port on the carb (plug the old hole and drill a new one). Then bolted the carb and insulator on together. I'll take a pic and post it on Monday. I tried different mufflers (holding them against the exhaust port) to see about taming the exhaust note, the best one was a length of 1/2" copper pipe about 12" long. Sounded really cool. Have a few more to try as well. Glow mufflers sounded cheesey.