As you can see from my system, it's been awhile since I played with jumpers on my 3.6s. Just about anything is better than the supplied Magnepan metal, U-shaped, parts.
If I understand what you're trying to so, I would use a short length of any brand of 12 gauge, oxygen free copper hook-up wire from Parts Connexion. Length doesn't matter and it could be solid or stranded.