On my graph it was a 26psi peak ramped down to 16.5 @6500rpm.

How hard would it be to fit the turbine shaft? Would it need a turbo specialist to do it?

I know of another FRS running the same boost/power for over 3 1/2 years now with no issues so far.

I'm still using the standard chargecooler rad, i'm saving up for A2A which should get a bit more power out of it.