Summit disc brake conversion kits

Anyone have any experience with these kits? They look decent and the price is right.
http://store.summitracing.com/partdetail...mp;autoview=sku

http://www.primoclassics.com/

i have installed 2 rear sets on differant customers cars. they have ssbc stamped on the calipers and if you peal the summit sticker off the rotor box there is a ssbc sticker under it. i think they use differant brakets from the ssbc kit. for the money you can not beat it