So the V8 90 has reached a quarter of a million miles and needs diffs, transfer box and an engine rebuild. What's my best option of a donor disco, what's the best V8 to go for and how new can i go using as much donor running gear as possible? I'll be rebuilding the 3.5 over the next year ready to go back in when the disco V8 slips it's liners/head gasket goes....