I initially did a 4.5/6 drop (2.5 spindle/2" spring and 6" in the rear) and I didn't like it. The nose just sat too low. I installed a 1/4" spacer which brought the nose back up almost 1/2", so I'm back to what would have been a 4/6.
I also never liked those super deep trim rings. The next time you go to a decent sized swap meet that has a bunch of wheel vendors, take a look at beauty rings for a 6 or 7" wheel. I think they're only 1.5 or 2" deep. They look a lot better on rallys (I think) because you can see more of the wheel.
http://67-72chevytrucks.com/vboard/s...d.php?t=368243