i have the minitec bracket for putting the alternator behind the engine, however i have also seen people mount it transverse above the LHS wheel (see dutchys mini)
also allspeed sell aftermarket mounts which i beleive tuck it in towards the block more out the front..
my understanding is that if you mount it up the front you require a minitec subframe (mounts the engine closer to the firewall) or you need to extend the front of your mini by an inch or two
this said i havnt mounted mine yet.. so not sure how its all going to fit for me