Sorry, my error - '97 Discovery 300tdi so it's a stock 1:22
No idea if it's cross drilled, I'd have to take it apart! Chap I bought it from had it stripped and inspected by his gearbox technician who reported its as free of wear/play. So I bought it on trust, but now realise I'm best staying with a 1:4 as my tyres would make a 1:2 useless on road
External serial numbers might help if they are of use to you?
Serial numbers would be great.
Cheers