I looked on ebay and all the bore sizes are to small...so what about these?

http://www.pneu-store.co.uk/acatalog/Pneu_Store_Webshop_CDG1_925.htmlhttp://www.pneu-store.co.uk/acatalog..._CDG1_925.html

CDG1BN80-150
Standard Type Double Acting, Single Rod

Price: £102.77 / Euro129.83 (Excluding: VAT at 17.5%)

Does that mean its 80mm bore and 150mm stroke?