[Dave951M]

Just wanted the head for a spare. I'm planning on having it cc'ed, five angle valve job, port matched and flowed. Hence, I would like to do this to the spare while I'm driving the beast. The 86na I have is just taking up room in my garage and will soon go to the junque yard, albeit sans mucho parts.

The 951 is my daily driver, the 931 will likely wind up being a track car. There is a perverted logic here. I do my own work, so labor rates aren't an issue. Not many guys will enter in my class, hence I'm likely to finish well. The 911 guys will look at me and think "it's a pos 924, nothing to worry about" Wanna bet!? Those guys will be dodging me like an uninsured mexican in a rusty buick as I blow their doors off. The 931 is highly underrated and in proper tune and weight is squarely between the 944na and a stock 951. But if you don't spin your own wrenches, stay very far away from one.