DECODE A 4 SPEED Trans ....please!!!

BH23P9B245075
B = Plymouth Barracuda
H = High
23 = 2 Door Hardtop
P = 340 275HP 1-4BBL 8 CYL
9 = 1969
B = Dodge Main, Hamtramck, MI, USA
245075 = 145074th Vehicle
Its a A body 23 splind four speed,