fuck pros and cons, heres the scoop, you will go through tires like crazy, ivan who has the s14 thats ka-t running what 9's? was rocking a welded diff. it depends on who welds it, how strong the welds are, etc. the price you pay is the quality you get. dont half ass it or youll just destroy a diff.

oh and welded diffs are gay. i have one. yippy