Shop Flea bay for USED Banshee Works shocks, can pick them up really cheap, yeah they will need a rebuild and maybe new springs, but now you can up grade and work your cashflow to fix what is needed, rear shock is good shock if it isnt not too worn out and be be revaleved also, If your making a long term investment  with your quad , a set elkas all around is up to date sound investment, there are a few cheapskates around here that went with Yammy 450 front shocks, but thats whole bunch of mount mods are required.