wanted an external fuel injection pump for zetec installation using standard throttle body and injectors. cavalier, astra. calibra gti gte gsi sri would be suitable or if you know of others let me know

i have done it with an old sierra / capri fuel injection pump. it was from a 2.8 capri with mechanical fuel injection, so the pressur efi quite high...

I think the last one I bought was an Astra one off Ebay. Cost all of 6 quid... I guess people don't want cruddy old bits of Vauxhalls... They don't come up that often but when they do they're pretty cheap!
Otherwise you can get a brand new shiny one for about 40 quid from the bayofE. Some of the cheaper pumps are noisier than the OEM models but in a 7 that's hardly a problem!!!
The advantage of the new ones is you know their exact ratings, trying to find out the flow of a OEM part can be tricky...

http://cgi.ebay.co.uk/KMI-FUEL-INJECTION-PUMP-PETROL-CAR_W0QQitemZ130146144148QQihZ003QQcategoryZ122139QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

might be worth a punt for the money.....