Type 9 or MT75 gearbox

[Mking]

I have the option of a really good and well maintained 2l Zetec engine. It's too good an opportunity to turn down and having driven the Mondeo it currently resides in I realise how much fun it'll be in a roadster.

My plan is to use MX5 diff and hubs etc as they are so plentiful unlike Sierra items, which long term seems prudent (I don't want to break something in a few years time and struggle for a replacement). Obviously I'll need a gearbox to link the 2 up. From my research it doesn't seem easy to mount the Zetec to a Mazda box (correct me if I am wrong) so guess I'll need a Ford item. Type 9's are becoming silly money but MT75 are cheap on eBay. Are all MT75 boxes the same? My search has pulled up several saying they have come out of diesel transits. I presume these are wrong as I would have thought the ratios would be wrong. Is this correct?