Having run both a welded 4.88 and a limited slip 4.88, I know prefer the LSD. 2.5 seconds quicker on the same course configuration made up my mind. Yes I said 2.5 seconds faster. At Sebring , on the club course, there are 2 corners that you are not going fast enough to break the rear end loose
and my car didn't push in those 2 corners, it bound up and wouldn't accelerate until I unrolled the steering wheel. Now with the LSD my car flies thru the corners and my shift points backed up almost 200 feet. Must mean I'm going faster. So, for all practical situations, I will not go back to the welded setup as the LSD has freed my car up and I'm challenging for the win instead of settling for 3rd place.