Turbocharger Bolts (T3)

In the process of restoring my engine, I have run into an annoying setback. To take the the turbo off the manifold to replace the gasket, which was found to be broken in half and cracked in 3 other places, I had to take the downpipe connector (technical term?)off the exhaust side of the turbo to get the turbo off the manifold. The nuts were frozen but rust remover and impact wrench got them off. Anyway, in the process of getting the "downpipe connector" off the exhaust side, 4 out of the 5 bolts that came out actually snapped on me. One survived, but just one isn't going to hold it together. Given that nobody carries manifold bolts for this car, what are my odds of finding these bolts, or does Garret use a standard size?

Incidentally, the manifold is cracked in two places, I couldn't see it before since the turbo was blocking that particular view.

Incorrect. I used a breaker bar on the neck with the O2 sensor, the sound of a bolt snapping was identical to that of loosening it. I used an impact gun on the manifold itself. No, it wasn't cracked at the turbo outlet, it was down a ways and was rusted. Hardware store? Cool, a break. Thanks.