I just picked up some MT ET streets. I am running a pre 99 rear end and didnt put the 3.5" tuds in it when I built the rear. I currently run a 3/4" Hubcentric spacer to fit my street tires (bolts to rear the wheels bolt to the spacer). Instead of pulling the axles out and putting in the long studs, Can I just bolt the new wheels up to the current spacer or do I need long studs?