I run an ST170 lump in mine, got an S2 RST box which does the job fine (has survived track days, rolling road, 1/4 mile etc)

Have to do a bit of modding to engine mount on driver side inner wing - I see crazycage has done it a bit different to mine but looks nice and strong

I'm running a cvh alternator with Zetec pulley - never had a problem with it either. Few pics in my sig that may be able to help.

CheeRS