For aftermarket, Luk clutches are decent, Marlin Crawler's Heavy Duty clutch kits are supposed to be very good. I run a Centerforce Dual Friction clutch and it is still going strong after 9 years. Can't hurt to change out the slave, although my '85 slave is likely the original (I carry a spare one). Also change throwout and pilot bearings.

r.c.brown@ieee.org
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Project: 4Crawler
4Crawler OffRoad - 4x4Wire discount code