I know the larger one is 1/8" NPT, but what about the smaller one....? It is for sure not 1/8", is it a metric size? It looks to be tapered like pipe thread, but I could be wrong, anybody know for sure? Or for that matter, can anyone dig up the OEM part number for it, maybe I have to get it...

I have a 1989 Shelby Daytona. it had the 2.2 turbo II in it but I dropped in a 2.5 turbo from a 89 sundance. I'm gonna put in a vacuum block so I wont have any problems with vacuum lines. I'm running all stock equipment(even charcoal canister) and the only thing I've added to it is a Blow Off...