With an even beefier engine, I will, at some point, want or need a limited slip differential (LSD). Therefore and for reasons of availability, I recently purchased a bespoke Westfield axle housing. This is mated to the Mk2 Ford Escort differential carrier and then bolted to the chassis via metalastic bushes (or Nylon if you prefer). Those housings are quite rare and when one came up for sale, I didn't hesitate. Today it was delivered and there are even oil seals mounted where the drive shafts enter the housing. Now I will have a look for a complete LSD diff and the front housing.
Cheers.
