Hi
Yep hoping to keep the track et all the same. From what I can find out on the internet the track width on a Sierra is 1450 front and 1470 rear which is narrower than the MX5 at 1490 and 1495 respectively - can't see it myself but there you go.
The Roadster is quite a lot shorter than the MX5 so if the track is narrower I can't see it adversely affecting the handling.
The steering rack is too long due to the reletively short front wishbones on the donor, the Escort rack is the right size and can be modified to work with the MX5 spindles.
I am in esscence doing what you suggested by keeping the dimensions from the donor apart from the longitudinal distance between the mounts.
I noticed that Talon Motorsport have claimed to have done some work with MX5 suspension; I'm just waiting for them to return my call...
Matt
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