First off, this site is awesome and I have been getting a lot of good information about my 73' blazer and some great ideas about what I want to do with it. I really want to put about a 6" lift on my blazer, all suspension and no blocks in the back. I'm really interested in off road design's 2 1/2" rear shackle conversion kit but didn't know if any suspension companies would put together a lift kit that had 4" rear springs and 6" front springs so that the total lift would come out just right. Do ya'll know if anybody, like skyjacker, BDS, superlift, tough country, etc... are good about making adjustments to current systems at a good price. Also, I'm thinking about running 37 x 14 x 15 inch IROK tires. Do they sound like a good size, with the proper trimming, gear changing, etc. Im running a 454 as it is. Thanks a lot. Hope to get soem pictures up when I can.