Well I live in in Eureka Ca and the closest place i have heard of that has done T100 SAS is in Santa Rosa which is 4 and a half hours south of me. The place were I live is completly certified and well trained just have never done a SAS on a T100. I would love to do it myself, but i figured it would cost a lot for the tools. 17 to 22 hours is what i have been told by other that have had a SAS on a T100 done. 20 hours times 75 per hour isnt so bad for labor. Welders are extremely expensive as well. I have the axle and it has been completely re-done. so thats done. I want to buy everthing they will need before i give te truck to them. I heard Skyjacker has good K10 chevy shocks that work great but idk. Im looking for a lift on the higher end. Skyjacker has 10 inch lift leaf springs that probably would lift the truck around 8inchs. I want to fit my 39 inch tires uder my truck without a body lift. Anymore advice would be great, especially on the process of doing a SAS myself