I have read some threads about this but none are current wanted to know how the dana 30's are holding up with 37's. I read that the common thing people say to do is c gussests and sleeve's. Are the dana 30's holding up well with just those modifications?

 

Nothing is for certain, but you should be fine with gussets and 37's. Sleeves aren't really needed. It's a mute point here on the forum, so take it however you want....