what is involved in installing one? and how do you plug that hole that i hear about? thanks

 

the Meziere comes with a freeze plug to press in the hole left by the stock pump shaft.

 

press out the old waterpump shaft from the housing (can be a bitch, can be a cake walk)
install new pump on housing (CSI requires a little dremel work for the 6 tiny ears for it too fit correctly, no biggy)

take the supplied freeze plug and press it into the waterpump housing hole that is left by the old shaft drive on the back side (mezeir and CSI come with one)you will need to go to a parts store and purchase another freeze plug too fill the timing cover hole (1 1/16" or 1 1/8" cant remember for sure)

reinstall housing onto motor

wire it up

theres a tad bit more too it but nothing major