As for the engine swap, I would opt for the LT1 and 4L60E route. I think that you will be alot happier with this vice the 3.8. Eventhough the 3.8 is a decent motor but, you have to play with the turbo in order to make some serious HP..
Thanks for the welcome and your right you have to know what your doing tuning a turbo car. I have a 9 sec gn street car now that weight 3600 pounds thats why thinking about this nova is so much lighter