Some thoughts for you.
1- Last time I went for parts, I gave the engine code as D750 so the lookup was easy.
2 - On another matter, the parts guy asked the real model number, I told him, he went into the back room and came out with a B7001 catalogue. No problem for them, but this is Canada where gray market units are welcome.
3 - I bought a parts catalogue cd on eBay for a few dollars - contact me for the sellers name if you are interested, or tell me which stickers and I will look up the numbers.
Apparently engine parts are no issue, but some transmissions are different between the 7001 and the 7100.