Can M3 Radiator Fit my 318is

[halcron]

I have a e36 318is. My radiator is quite old and I am thinking of changing to a new radiator for improved cooling and to prevent leaks.

I have seen M3 radiators on ebay.

http://cgi.ebay.com/ebaymotors/FLUIDYNE-38mm-Aluminum-RADIATOR-92-99-BMW-E36-328-M3-Z3_W0QQcmdZViewItemQQcategoryZ33602QQihZ018QQitemZ280238970631QQrdZ1QQsspagenameZWDVW

Can these radiators fit into my car? Also, I notice there is no coolant expansion tank unlike mine. I scouted around and found tunermotorsports selling the expansion tank.

http://www.turnermotorsport.com/html/detail.asp?PRODUCT_ID=17111723520

Does this mean that if I install the M3 radiator and expansion tank + necessary plumbling I am good to go?