FRONT SLIP YOKE ELIMINATOR 1988-present CHEVY AND GMC 1310 YOKEINCLUDES YOKE 1310 DOUBLE CARDAN YOKE 330, 1350, AND 1410 SIZED YOKES AVAILABLE UPON REQUESTTHIS ADAPTER MAKES THE FACTORY GM TRANSFER CASE COMPATIBLE WITH A SOLID AXLE CONVERSION WITHOUT NEEDING TO REMOVE OR CHANGE THE TRANSFER CASE. WHEN INSTALLED INTO THE FRONT OUTPUT OF THE TRANSFER CASE ON A 1988 NEWER CHEVROLET OR GMC FULL SIZE. ALLOWS FOR A DOUBLE CARDAN SHAFT TO BE USED. MUST BE TACK WELDED IN PLACE OUTPUT SHAFT SEAL CAN STILL BE CHANGED AS