j30 dif
but on the downside daily drivability goes down you take your pick lol
i like my j30 i drift with it alot and dont have any problems i think there better than a welded just cause im broke and cant afford tires and my camber kills me anyway but its ur opinion, i say j30
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welded diff is the win for drifting and only drifting. Once you leave the track I pity you in the rain... or better yet I am waiting to get parts after you crash in the rain



[fortune cookie @ Ling's garden]