JKS makes a conversion mount that bolts in. The only downside is you do lose about 1" of height at the top of the mount. I used them for a few years before I changed my upper mounts. I think I still have four of them out in the shop on a shelf somwheres. I don't remember what I paid for them but I don't think it was all the much. I used them because there are alot more shock options if you can move away from the stud mounts.