PG98GT
Founding Member
Well, to answer the original post, I used them both, the PI under the NPI bracket. It's been fine now going on 5 years. I couldn't figure it out so that seemed like the best solution. If you go to page 2 under the link in my sig, enlarge the engine photo, you can see the result.
Keep us posted, I would need them but I've been persuaded to get the heads and I found a pair cheap soooo. My buddy would def wanna pair.