ST-10 CLUSTER GEAR FOR 3.42 FIRST TRANSMISSION ,WILL ONLY MATE WITH A 6 GROOVE INPUT  EXCELLENT USED ORIGINAL BORG WARNER PART NOT A CHINESUIM REPLACEMENT , NO PITTING ,DINGS CHIPPED TEETH ETC. INDUSTRY #1304-077-016   TOOTH COUNT 31-25-20-16  ,TAKES A 30T 1ST NOT A 34