Here's what you can do.
Get a front diff from an automatic v6 86-95 4runner/truck.... the auto's come with a 4.30 gear and will work (just fine) for ya. just do a straight out swap. Then sell the 4.10 for more than you paid for the 4.30 and recoup some money from the e-locker <img src="/forums/images/graemlins/wink.gif" alt="" />.

89 4Runner
3" BL, M/T locks, 33"bfg mt, bilstein, Kayline, tubebumper, toyotafiberglass panels
TBI: Elocker,3.4 w/ORS,b+b,S2Sstg2cams,arias pistons,P+P intake,TRDs/c,URDpullies+7th,downey headers,MAPECU2,WEGO WB, SupraMAF,walboro255,stg4clutch, EPaOo2 sim