Pinion angle shims:

So when u say ur tranny was lowered because u installed the GVO did u take ur measurement off the end of the gvo. Do u mean it's actually 5 degrees down on the trans/ gvo. Then u need ur pinion 5.5 down if u want .5 difference. U always want the pinion lower than the trans/gvo. I would think u would need at least 1.5 difference. Hope this helps Kim