High capacity water pump

Hi,

I'm pretty sure my water pump is no the way out - grinding noises and occasional squeels.

I've checked out MiniSpares and found this:

http://www.minispare....aspx?pid=34895

It says that it fits a 998 block with slight modifacation of the impeller on the pump.

Has anyone fitted and "modded" one of these and is it straight forward?

Thanks

Z