I used a 4G64 block with 8.5:1 pistons. Mildly ported head with 264 cams. 14B and all stock fuel and air plumbing. In this configuration it makes 200 whp - 210 lb/ft. on 7.5 lbs boost (no boost reg, just hard plumbed) and runs on regular gas. No ping until you heat saturate the stupid stock intercooler.
No, the car won't stay using the stock turbo and plumbing. I'll be upgrading that soon enough, but want to get the suspension and brakes worked out first. My point in responding is to point out that the 4G64 block and crank with new rods and pistons is an alternative to the stroked 4G63.