Turbo a good idea for auto-x/ road race?

[67goatman455]

First off i am building a 1967 GTO, the plan is to keep it as light as possible with the use of fiberglass parts, and having a reasonable 500hp. I have had it set in my mind to power it with a 5.3l LSx motor and a 70mm turbo. The setup is coming together slowly, but surely.

I have been second guessing myself lately though, i'm really worried about having turbo lag, or dramatic power increases and having the car be unpredictable in corners. I have been thinking about switching to a Pro-charger instead so the power is more on demand.

The other option is to just achieve my goal of 500hp on just the motor itself. What are your thoughts/experiences?

Thanks for any help!