I know this is a bit of an older thread, but if anyone need any info on the 3800-II that's actually an engine I'm very familiar with. I had a 2001 v6 firebird for years and was very active in the v6 community. It is imo one of the most reliable engines ever made. It is also a much better option than a series 1 these days. I can help dig up info on sourcing the Holden supercharger if anyone gets that far. Just know you need L67 heads for that as the injector bosses are in the head on the supercharged engines and in the intake manifold on the NA L36.