Dodgetalk.com used to be my go-to, but I have not been on there for a long time. Definitely more technical Folks there like the race forum here.
Ramforumz.com and Dodgeforum.com are also out there but I found they were mostly tint, floormats, and mudflaps kind of users, but also, been a long time since I've been there, so perhaps it's changed? There is a V10 category:
LinkBest of luck, you are on the right track to be swapping same year to same year............if nothing matches on those 2 and half engines you might be much aggravation less to sell what you have and buy the same year engine and stay on Easy Street.