Main Engine Ground Strap??????

I'm trying to straighten out the screwy wiring on "IT" when a P.O. installed the MSD-6A. On B body cars there is usually a ground strap from the passenger's rear of the motor to the firewall. "IT" doesn't have one.

My question is, is it supposed to have a ground strap from the motor to the firewall? If there is supposed to be one, where does it go? Anyone have a pic if there is?

I'm trying to get this straightened out in time to make a local show this weekend, so any help would be appreciated.

Thanks