We have just obtained some sets of brand new NOS discontinued ACDelco 616N spark plug wire sets (GM part#12073997). These resistance matched and tailored replacement wire sets were made specifically and only for 1989 Vin 7 TTAs.
Here is a link to the ACDelco application guide for thes wires:Parts Information | ACDelco
These are NOS ACDelco replacement wires, not original TTA anniversary wires. However, because they are original OEM replacement wires, they are considered "correct" for stock show classes.
Here is the direct link to the part on our website: http://www.nos4gn.com/servlet/the-34...o-Trans/Detail