Ok here is what I think you should do. There is a book called Big Inch Chevy Small Blocks. Check that out and go from there. I have the one for Ford motors (when I was thinking of doing a 347 stroker for my 302) and they list a TON of different places to order full stroker kits from and say which are good and which are not. They will list some that are good for just fully aspirated or the ones that are good for just nitrous or nitrous AND super charged, etc. It is a good book and will help you save time, money and mistakes.