I put a performer 390 intake on my 428 and it looks like my shaker scoop is setting too low. I have no spacer under the carb right now, but it looks like I need one. Can someone give me a measurement from the top front of there scoop to the top of the center seam on there hood so I can space my carb up right? Also while I’m at it, how can I identify if I have a 428 shaker lower air cleaner. It could be off of anything.