I've bought a 1990 turbo that I'm slowly turning into a track car, and I'm planning on getting an EMS and running as much power as the "high flowed" ct20 in the car can put out. I imagine this should be around 200-230rwkw.
 
Is the Gen 2 head gasket going to have any issues at this level? Pistons seem to be a problem with any knock over 300hp but I can't find any definite answers on the HG.

All depends on the condition of the motor to start off with.

Some pop the hg just upping the boost on a std or hiflow, others have fitted gt30s and 20 psi and been ok for a year or so.