Mtech I looks like rubbish. Mtech II is great.
I have done a full Mtech II kit on my e46 pre facelift.
Check the build out here --
http://e46-silver-wolf.blogspot.com/
Regarding your tires with the Mtech 2 kit, have seen it before, no photos unfortunately, but looks great. I can get you in touch with a guy who has some Mtech 2 bumpers for sale.