Hi, I was wondering how much hood clearance you have with your 351 setup? I am doing a 351W swap and am going to run an Edelbrock Performer RPM (not the air gap). I was planning on also doing a TBI setup, and was wondering if there is clearance in there for a 1/2" spacer under the throttle body in order to make the MAP sensor on the unit work correctly, or will I need to mill out the plenum divider? Thanks.