Pro's Its cheap, and pretty strong if welded by a competent welder.
Cons Wears out tires quicker, puts more stress on axle bearings when turning, constantly chirps tires when turning, can make the front end "scrubb or push through" while turning in some situations.
What are your plans for this car? Ive had a S10 that I put a minispool in first (locks the diff full time) and after a few months started to hate it. Didnt take long to realize i wasted cash I could have put towards a locker. My old 78 Chevy 3/4 ton 4x4, I had a nieghbor that owned a welding shop weld up the rear diff. It worked great, but then again, I only drove it on the road to get to and from my offroad wheeling locations. I would save up and get a Ford Racing Trac LOC. You can pick up the 28 spline version for $199.00 new.