I can fully understand and appreciate Tom's reluctance to carry products for which he can't give reasonable assurances of support. Having purchased an MVVS 45 from Triad Aviation (www.triadaviation.com), I will attest to the excellent support I have received from the good folk north of the border, and in particular David Moen of OTN Imports. He has been very responsive to my multiple inquiries, and a great resource as I went along.

My MVVS 45 resides on a WH Edge. Although this is my first gas airplane, it has been virtually trouble free, and is well suited to my style of flying. I paid particularly close attention to an earlier thread in which Tom provided his observations about how well this engine performs. My conclusions are similar to his -- In my case, and with a little over a gallon of gas through it, there's still an opportunity for me to squeeze some more out of it. While I have no frame of reference other than videos I've seen, I'd say that the MVVS 45 would approach the output of the DA-50. With time, I'm sure I'll get more out of my combination.

I'm attaching a dimensional drawing of the 45 with the hope of answering any questions you may have. Try David again. You'll be glad you did.