1994 Chimaera steering rack & rear axle.

[chris43]

i have had a pre purchase inspection done and two potential problems have been thrown up.
1. steering rack has wear in it.Is the rack a TVR part or from another manufacturer? If so which car?
2. The rear axle may have an lsd problem which may require it to be replaced, is this from another manufacturer and, again, which one?
Any help would be gratefully received.