BDA, I specifically asked Richard when purchasing the NG3 about fitment, that's when he suggested using his mounting kit (is bolted to transaxle rear cover in pic). I quizzed him then, remembering that you had to replace your hoop. He said NG3 would fit with 365 rear frame loop.
Very recent follow up call, I posed the question again, telling him my plan - attach TC engine to NG3 to locate the mounts, and then attach Zetec to NG3 to make engine mounts, His response was that would be the way that he would go about it, but they had never installed a Zetec longitudinally.
So, I'm thinking it must fit, If Richard says so. but seems every thing I've read/seen uses a different method to mount the transaxle.