One more thought on the booster clearance, I did researching on this some time ago and read that you can move the booster over for more clearance, never heard of doing that. And not sure how thats done? My buddy that had the 440 that cleared the booster until he replaced rubber mounts and said it was a no go, tells me they were not original valve covers but looked like some sort factory cover. I wonder if the truck valve covers are truck specific?