the transmission is a t50, you can find the transmissions in toyota trucks. ive had two of cutlass with 5 speeds, one i still have a 79 black on black the other i had years ago i parted out the trans is in my dads 69 cutlass and the driveshaft is in my 85 ss that i have a t5 out of a camaro in it. the driveshaft was the correct lenght for the swap.