I removed my lower iso's.....I did not wrap the pig tails with anything. The springs did squeek and groan until they settled in which took 1 day of bombing around town. Now they are fine, no noise what so ever. Anything that can give these drop springs a little rake is better IMHO. Its hard to tell on my car since i have 225's up front, and 255's in the rear, but most of the time that ive noticed, leaving the iso's in makes the these cars look tall up front. Here are some pics, they are eibach pro kit springs