After a search of places and forums i found this thread on another forum that hopefully will answer your questions on the Optima battery.
PTCrew.com - Learn it or Burn it.
There's a few of us that did the hyper-ground system on our PTs. You can look for a kit or do it yourself. I bought a kit on eBay for around $10. Basically, it's a gold colored plate that attaches to the negative side of the battery and has places for up to 5-8 more cables to attach. You run the cables to different parts of the engine, body and computer bolts to ground everything. I did 3 extra grounding cables on mine; one to body, one to bolt on computer, one on side of engine.
