OK, no problem.
After reviewing my info (I've got the 2004/5/6/7 Cub Compact brochures, and a blue book) I've got some controversial info however....the Cub brochure says it's a 41 HP Daedong 4 cylinder engine, the equipment blue book says it's a Mitsubishi 3 cylinder engine...I always thought the 8000's had the Daedong. The daedongs were used in some other tractors, I'm unsure if mahindra/Kioti, I think Kioti but not positive. Both great engines. Guess you could tell from the # of cylinders...
The specs for the loader are not in the 2004 brochure I have. The 2005 lists the 640 loader as 1350lbs to full loader height of 103.5".....but that's for the 8354, a 35 HP machine. The 642 loader, used for the 8454 (45HP), lists 2100 lbs to a height of 11.4". Sooooo.....perhaps interpolate for the extra HP, put you somewhere in the 1700 lb range. My 633 loader on my 7532 is rated for 900 lb, but I've picked up 1000+ very easily up to around 6'.
You'd have to call Cub for the parts, might not be a bad idea to call 2 or 3 dealers in your area to check on parts availability. I never trust 1 opinion....
Since Cub went with Yanmar in 08, you won't find the parts list on their main website. You should still be able to download manuals online, though....I've downloaded manuals for numerous models.
17K for 500 hours for that machine is an excellent deal, IMHO. I think it also has the quick-attach bucket?
Any more questions, just ask.