When I bought it I thought it came with the 14 psi spring, but it only had a 6lb. If you plan on running a boost controller its not an issue though. I didn't run it extremely long, but it worked well! Other than the support straps fell off its a nice kit. I just welded a piece of mild steel in and added some more support to the waste gate. Mine is currently sitting in boxes, as I pulled it off to build a badazz na, then ran out of money. I would offer to sell you mine, but I'm about to save up for an esslinger long rod kit and put it back on my mustang, or maybe the ranger. Plus I put $1300 into mine and didn't even do a good rebuild. It will Nicole and dime you to death before all is said and done.