I have decied to not do anything with the cam right now as that would bea. lot more work. Curently my plan is to go with 318 valve springs and stock valves that are back-faced. Where is a good suplyer to get 318 springs and retainers from.
318 springs are basically slant six valve springs, they will fit your stock retainers. RockAuto would be a source to check. You can also watch on eBay.
Are you planning on building your own manifolds?
Gill Welding and Fabrication has some neat stuff for the slant six. Google that. They recently post photos of a slant six turbo piping they are selling, looks nice. Also look over at www.slantsix.org lots of turbo builds over there.