Re:turbine outlet/wastegate...Z6 + thunderbird T3
 

I had the same SVO turbo problem, then I bought a "5 bolt flange" off some guy over at H-tech and it turned out to be to big ( yet the correct shape )!!

I'd just go HMT style on it, but it looks like you've got it covered already.

Re:turbine outlet/wastegate...Z6 + thunderbird T3
 

FORD T-Bird 85-86 2.3L (Manual) GAR (AiR) TB03 60 trim (watercooled)

I'm pretty sure this is the one i have.

Re:turbine outlet/wastegate...Z6 + thunderbird T3
 

i am using a t-bird 60/63 w/saab swinggate ass. i was going to use the addjustable wg from the saab but since the junkyard internal wastegate thread informed me that the tbird wg is set at 10psi then i just used that one. i did have to drill and tap the compressor to get the wg to fit correctly.