400 block stroker kit or pieces to build a 500-512

ah thanks guys.....I wonder if they offer a discount if i choose not to have them balance and do it locally? I have read mixed reviews on their balancing and would prefer to have it done locally if they do a shotty job of it. I am going to take my eddy performer RPM's to a machine shop and have some real work done to them so they perform like they should. I wonder if i will need to upgrade my clutch? Currently its a stage two from brewers and has maybe 1800 miles on it.