Hello, I bought a kit car about 6 months ago (Jaguar Wildcat) which seems to have been built with a ford donor.
The donor car (assuming it all came from one vehicle) had a automatic box, 2.0 pinto, independent double wishbine front, live rear and built in 1981.
I assume it's a MK5 Cortina. Cheap in the 90s when the kit was likely built.

​​​​​​I'm wanting to put a larger engine with gearbox up from and want to understand what Axle I have (see picture, don't look at the rust).

It looks like at Atlas to me (although apparently some English axles looked similar with access at the back) and it measures 53" from inner flanges. Does this mean it's a 52" Atlas? Did theu make a 53"? Am I measuring it wrong? Flange to flange right?

Greatful if someone can confirm what I'm running here and what ratios it has (if possible)?
If it is a Atlas from a cortina, is it the weak or heavy duty one? Does it matter (assume 250bhp).

As far as diff ratios go I'm looking for 3.09 but I understand this was only available in the Capris.

Thanks for any help.



View from the top (body removed)

View of flange and drum