If you could post some photos of your mechanical setup with the LS, I'd like to see them.Running an early LQ with mechanical linkage. It required a gen2 F body ball threaded into 1/2" aluminum bar stock bolted into the stud hole on a Corvette bell housing with the block casting "hand milled and threaded" on the other end for the pivot point. I then had to do a fair amount of trimming and fitting the Z bar for clearance from the headers. Still wiring up the electronics so full functionality isn't tested. It was a bit of a pain, but I prefer the analog feedback from a mechanical linkage. Can see about reference pics if you are committed to mechanical.