you have a choise of the a535 5 speed hydro clutch from a v-6 dak or d-100

ax-15 5 speed with it's own 9 bolt/hydro v-6 bell housing.

or the v-6 v-8 3500 5 speed trans different gear ratios and performance levels when JY scoring them.

then you have the NV4500 5 speed V-8 hydro bell kinda a garanny 1st geat with OD 5th gear.

with a v-6 hydro clutch bell you can even run the 833/833OD 4 speeds

you can use the 130 tooth V-6 flywheel/clutch on a 318-5.2 or a 130 tooth 360 external balance flywheel.

the a535 being the lightest duty of the 5 speeds, ax-15-3500-4500 as the HD unit

i am swaping in a hydro clutch system with a 92-v8 bell, NV4500 5 speed in my 85 stepside using the v-6 flywheel and clutch on a 318.

so far i have found the NV4500 5 speed 2x unit i have needs the xmember moved back 2" to bolt up in the 85 frame.

I am also swaping cabs to a 91 shell for the hydro clutch system/pedels. the 87-93 cabs have per-drill holes for the for the hydro system.

going in a 68 truck might need some fabbing for a trans mount but they used a hydro clutch so that part is a plus for a newer bell and/trans swap.

here are some pics to ID the bells & 5 speeds when junkyarding

the v-6 d-100 bell has the hydro slave on pass side.

the d-150/DAK v-8 bell has the hydro slave on driver side.

the v-6 and v-8 hydro bells have 2 trans bot patters to cover 4 75 speed trans.

the ax-15 v-6 bell is a beats of its own with 9 bolts and slave on driver side.