Hi Nathan,
If you check out the first few photos in this thread you'll see the mount I used on my M38CDN. I used the M31C and had to fabricate the plate that goes on the cross member under the tub. Since refurbishment I haven't put it back together as I'd have to re-jig the underbody mount due to changes in alignment and height to tub because of the new body mounts, etc.
http://www.mapleleafup.net/forums/sh...ad.php?t=31723