ran303toploader 3-speed tremec rat ran rab rac hef t150 transmission 2-3 synchro assembly with rings, springs & keys fits jeep gmc chevy & ford '63-'86 with 33t 2-3 rings (1at91j-2.5a)The IH 303 was introduced in 1962. They could use the No. 22 corn head, or platforms in 10, 12, or 14 foot widths. Horse power of 65. Production ended in 1967. $300