Buy Offer - Sprockets, Upper Roller, Idler Assy, Track Link Assy

we have an requirement for sk350 kobelco excavator's undercarriage spares
1. lower roller
2. upper roller
3. idler assy
4. sprockets.
5. track link assy
6.track shoes

kindly advice your best price and availability for the above.(we cannot able to source the part numbers for these undercarriage spares).

looking froward to hear from you.