LA 360/5.9L Small Block Build - Advice?

I think it's what you feel comfortable with. I'd rebuild it if it'sa long term solution. Do it mildly unless you plan to upgrade the exhaust stuff. Otherwise it's going to be choked off anyway - no sense in spending big coin to make lots of power that won't help you. A simple rebuild, upgrade the valves as noted (2.02/1.65) and a good performance valve job, and even with stock pistons and a mild cam it will be torqey in that car and run on pump crap.