Where to ground engine?

In my 1965 SB, I used the ground battery cable from an 80's Dodge truck w/ Magnum. It has multiple ground wires and I used them similar to the truck - main wire to engine front (forgot where), other wires to body, radiator support, maybe even alternator case (forget). I took the battery cables when I got the mini-starter. They were a bit long for my car.