Alright just to close the loop, there are threaded shafts on the NA too. The part that gets fun is getting the pad (the aluminum electronic thing the coils plug in to) attached to the l67 bracket. None of the holes line up. So what I did is I took a hack saw to the NA coil mount and cut the fins and bolt holes off the bottom. If you hold the coil pad on the modified NA mount there is one spot where you can bolt through both. I marked where that is on the l67 bracket, drilled and tapped a new hole then bolted everything together. If you wonder why I went the extra step of modifying the old mount, seems if was also acting as a heat sink and I was afraid leaving that out would burn up my coils.
Once the new bracket is in place on the engine, you will need to shoehorn the battery back in using a crowbar so be ready for that.
