73' B3 340 Duster pro touring build

Looks good....

What percentage of the uninstalled height did the front/rear springs collapse?

Remember to allow for fuel.....about 100 lbs

Percentage....about 45% or 1 3/4" in the front, so It will ride right close to the middle of the QA1 range which is almost 4". As for the rear ??? I didn't get that far, and I sat Dave (Dad) in the trunk to compensate for fuel & back seat, he's almost 200 lbs....the rear dropped 5/8" at the wheel well.