Nice! G-bodies are a great platform. I found this one as a rust free roller, so I couldn't pass it up. I put a 5.3L LSx (LM7) in it, and I'm going to pair that with a 4L80E. I'm hoping its ready to run by a track day towards the end of October, then I'd like to turbo it next year.

The ZZ4 is definately a nice engine as well.