Need help. Questions about a J30 Diff seal

[OutToWinPAHC]

I have never posted in this subject, but I am in a little bit of a bind.

I have a modified J30 differential. It uses a welded R200 internals open end from a 240sx, with 6 bolt output shaft. The ring gear is from a Z32 Turbo 3.69, and I use a 13 tooth input pinion (possibly Z32 turbo, or Q45). It had an aftermarket clutch type LSD in side of it, but it opened up so it was gutted and I decided to go with a welded setup at my horsepower.

Anyhow I need a front oil seal. I went on the parts sites and see that they more then one type. How can I tell what type this may be?

95-9795-97 with traction controlor 95-01 with traction control

The J30 diff had an ABS speed sensor at the front of it. How else can I tell?

[NJ 666]

Dude, that's awesome. Do you post on LS1.com or Tech? Do you need the service manual info?

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[Q45tech]

Vehicles WITHOUT TRACTION have a single rear ABS sensor on the Input of VLSD..................with traction have 2 ABS sensors 1 on each output of VLSD.