I have some 383 Eagle stuff on eBay right now. It is almost brand new...but one piston has the ringland broke. That is all that is wrong with it.
Personally I've sold a little on ebay and made people happy but it seems like every other time I order something...it isn't really what I was expecting to receive. Oh well...
Personally I like the local speedshops but the best priced and best service mail order is Powerhouse, home of the 383 stroker.
Like I've said before, Once I ordered an 11:1 350 kit and (they didn't tell me when I was ordering) the pistons were all balanced tp within 1 gram, full floater pins and lightweight for being "claimer" pistons(each was 706 grams).
enginekits.com even Hotrod pushes them and I know why.