Weiand 5995 - 1995 / Eddy street ram

The only tunnel ram currently made and available new is the Weiand. All others are no longer made. You’ll have to fish around for what is used.

I failed in a spectacular way to point that out in my post ,even thought that was the reason i wrote about the chevy top piece fitting the mopar bottom part.
Considering how often they pop up used over here there must be plenty of them in USA.