John
I have access to tons of surplus military and aerospace tubing, If you know what you need (I will assume 2" aluminum for the cold sideand 1 3/4" to 2" stainless for the hot side).
I can send you some bends, you would need to cut and fit them, then tape them together with no gaps, then you could send them back to me to weld or have someone local do it. I will have to charge you (I am a business after all) but it will be much less than a lot of other fab shops.
I can also get you all of the silicone couplers, T bolt clamps, and maybe even the intercooler at very competive prices.
Even if your not interested in any of that I am always here for moral support, I am working on a turbo/nitrous Supra this week, going for 700HP!
Whats the turbo out of? It looks like it has an internal waste gate, that will make things much easier.