Unsure what chain set

[joecaffrey85]

Hi. I have a cannondale bad boy fatty alivio 700c.

http://www.paulscycles.co.uk/products.php?plid=m9b0s156p4296

I want to upgrade the chain set cassette and chain as the one I have is rusty and worn out. I have found this on eBay but I am unsure if it will be compatible with my bike. Also I want new front and rear deraileurs but again I am unsure. Here are the links. Any help would be great. Thanks!

http://www.ebay.co.uk/itm/310370508643?redirect=mobile

http://www.ebay.co.uk/itm/Shimano-Alivio-8-speed-front-MTB-Mech-Derailleur-FDM412-Dual-Pull-Multi-Fit-/300725551431?pt=UK_sportsleisure_cycling_bikeparts_SR&hash=item4604a3c147

http://www.ebay.co.uk/itm/Shimano-Shimano-RD-2300-8-speed-rear-derailleur-with-smart-cage-/330811522417?pt=UK_sportsleisure_cycling_bikeparts_SR&var=&hash=item4d05e73d71

[nfmisso]

Joe you need to provide some information about your bicycle:
* current number of speeds.
* current derailleurs
* current shifters

The first ebay item is for 9 speed stuff; the 8 speed RD may or may not work well with 9 speed stuff. The 8 speed FD should be fine.