I'm the service center manager of a Valvoline and did some welding on my s13 at work, having access to a pit anytime I want is awesome, the owner lets me use the shop after hours whenever. Made the welding job super simple, if you were local I'd invite you over haha sorry man!
Honestly though, I've done plenty of welding on my back under a car on jackstands, laying a few beads for a patch should be easy enough, good luck!
