Hey Mike, you have your power options. If I was you, I would keep sexy ESI stock and clean. You can put SRT4/420 upgrade power in it, but:
- it's still fwd,
- lot of downtime if its your only car,
- 4g63 have more power supports (or so it appears)
- turbo kits at 8psi puts in competition with mildly upgraded civics/neons/cavaliers, and you will be toast against gti/beetles/saabs and many family v6/8 cars

For much cheaper, get a awd turbo AND keep the ESI for a more reliable means of transportation - while upgrading your 4g63 (or even better, build one from scratch while driving the ESi).

Faster is good until you realize what's out on the roads: lots of newer family cars/trucks come with lots of torque and hp.