I ended up using Dynamat - simply because when I added shipping in to the price and one seller had free shipping, the price almost equalized. Is it the best? Heck most of it is made out of the same materials with maybe one with better stickum or a wee bit of difference in thickness. And shipping that stuff - can get expensive for not much coverage as it is very heavy/sq foot.

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Just looked at shipping for my replacement 185* rear springs and spacers - from two different Midwest sellers, Speedway for springs and Hoerr for the spacers, appear to be on the same 8:22PM UPS truck from Buffalo to the local distribution center. Now, let's see if they really get delivered in the snow storm tomorrow I polished up the wheels today and will do my rear end tomorrow (TCI screwups have really cost me a bunch of time as well as bucks. Time - not a big deal, bucks - painful)