I just finished replacing the leaf springs on the Bronco.  I thought that it had a 3.5" lift on it so the 5.5" would work fine with the garage.  Well the front lift was 3.5" but the rear was 3.5" blocks on 34 year old leaf springs that were slightly sagging.  And by slightly saggging, I mean that the rear of the bronco is now 5" taller than it was.  Well now I'm going to need to either let alot of air out of my tires or rachet down the suspension when it goes out of the garage on the 33's.  Looks like the 37's will have to wait until the leaves settle some.