Steve, cool ride man. I was scratching my head for a moment thinking you'd plugged your turbo in the wrong side of the carby DERP. Haha.
What a beast, makes me want to turbo mine now!
forget the old MSD BTM, just run the new MSD 6AL-2 Programmable. Finally they've updated all their analogue circuitry and bettered the Crane gear. Digital baby.
Curve control and boost retard using a MAP sensor to program.
I'm going to the US in January, I'm going to pick up two of these, one for the wagon and one for the 911. Depending on luggage I might be bringing back a couple of them to sell as well. 360 bucks US, but they're about 50 to ship them to Aus (that's what Summit quoted some months back). But that's much cheaper than the 700 the local retailers are asking for them (surprise, 100% markup, stick it Gerry Harvey)
http://www.summitracing.com/parts/MSD-6530/