Shock Mounting on Rear Driver's Side (K5)

[DJ31499]

I've ran into another issue with installing my new bilstien 4600's. I've got three out out of four of them installed, but the rear driver's side shock has a really tough mounting set-up right next to the gas tank where is get a ratchet or wrench in there to get it off. Even if I were to get it off, I don't know how I'd get the new one on, since the bilstiens come with the stud already inserted through the eyelet of the shock. Could I cut a whole near the original; spot in the frame, somewhere more accessible to mount the new shock? Any Ideas?