It all depends. You have an LT1 already, so it is not worth the swap. The money that you will dish out just to get no more than 50hp is not worth it. If the motor that you already have is running good and strong with a proper PCM tune and tuneup, then I would go another route. You would be surprised how well the car runs and how much hp you would get from a proper PCM tune and just a tuneup. I would try to do your bolt ons first. And, if after you do your bolt ons you want to go faster, then I would look into a port/polished head and cam swap and/or stroked motor.