Thanks for the info on the full ducting. The reason I ask is that on other threads, Larry Wolfe has stated that Wren suggests not going with fully ducted installations with the MW-54. Others have also talked with Wren confirming their suggestion.

Technically, it doesn't make sense to me. A well-engineered duct like BVM's should work great. I don't buy the argument for a plenum inlet--it's just so draggy!

Glad to hear you've had success with the Sabre/MW-54 combo. I'm contemplating a Wren purchase for my Cermark MB-339, but as soon as that's done I'll want to get going on a building project. I've always wanted a BVM Sabre, and the Wren seems like a great fit for it. I've also had my eye on the Avonds F-104 for a long time.

David