Here's your answers:

Some of the kit I bought new (e.g. Mugen fuel rail). Other bits I picked up used as some of my friends were upgrading their kits. I installed this kit in March, then pulled it off in June when I sold the car, putting maybe 3.5k on it. I think the T-25 already had 10k on it before I bought it, but I'm not 100% on that. I do know it was just under a year's worth of use. The turbo has very minimal shaft play (I actually didn't notice it until a friend pointed it out) and no leaks.

The kit was on an EG D16. With a new manifold, you should be able to slap it on a b-series.

I can take pics, but it would be on my cell phone so they'll suck. If you're serious about buying it, PM me a number and come take a look since the pics won't show much anyway.