I'm looking for a cad file or measurements for the miata mx5 bellhousing bolt pattern. Can any one point me to or have this info?

Try here> http://www.mx5oc.co.uk/ It's like locostbuilders but for MX5's

Let me know if you don't find it.
I have a spare 1.8 mx5 engine in my dad's garage that I can get the measurements from for you.

Thanks, I have a mx5 tranny that I'm going to be making an adapter plate to fit it to a 2.3 duratec. I was able to get a cad file from a generous fellow over on duratecperformance.com, for a duratec. Now all I need is a cad file for a mx5 and I can overlay the 2 together and make an adapter.

Will the MX5 tranny take the power from the Duratec?

There are a fair number of cars in the MX5 owners club with 200-250 bhp (some are higher still!) and the gearbox internals have not been touched.

The 1.6 diff is weaker but the 1.8 diff is really strong and easily upgradeable to take a plated lsd