Why not try the e36 M42 kit? I'll bet the first part # is for the pair of main coolant hoses, the second one should be the intake elbow. I'd call to be sure the diameter is the same as the stock AFM outlet, but it sure looks close. The e46 M3 bit looks similar but angled the wrong way.
http://www.samcosport.com/usa/car_kits.asp?make=BMW
(http://www.samcosport.com/usa/prod/car_kits/big/images/TCS42C.jpg) (http://www.samcosport.com/usa/prod/car_kits/big/images/TCS42C.jpg)
318is E36
TCS42/C
Coolant
CK42/C
(http://www.samcosport.com/usa/prod/car_kits/big/images/-noimage.jpg) (http://www.samcosport.com/usa/prod/car_kits/big/images/-noimage.jpg)
318is E36
TB464
Induction
CKTB464