I have an R/T Twin Turbo
I wouldn't trust a Dodge dealership to even know what kind of car it is. Ditto on George at GTRacing, not sure where else over there has experience but the guys on 3Si will help you out! I'm on the island.
Just saw your post on 3si, I'm Coal.
I think people are not understanding you mean due to lack of punctuation. Try using some! Absolutely no reason to rebuild your engine unless there's a problem with it. Always keep maintenance above modding though, and like others have said, mods don't increase value. Cars depreciate, they're not an investment.
You absolutely can turbo an SOHC or DOHC and some people have found some really impressive results, but it's pretty retarded being how cheap twin turbos are now.