Just found this for compatible wheel sizes - I'm not sure how reliable the source is...
http://www.wheel-size.com/ guess you would hold them on with OEM Evo bolts...?
2.0 Type R
205/45 R17 7x17 ET41 5x114.3 M12 x 1.5 64.1
215/45 R17 8x17 ET39 5x114.3 M12 x 1.5 64.1
215/40 R17 8x17 ET39 / 7x17 ET39 5x114.3 M12 x 1.5 64.1
215/40 R17 8x17 ET39 / 7.5x17 ET39 5x114.3 M12 x 1.5 64.1
215/40 R17 8x17 ET39 5x114.3 M12 x 1.5 64.1
215/45 R17 8x17 ET39 / 7x17 ET39 5x114.3 M12 x 1.5 64.1
215/45 R17 8x17 ET39 / 7.5x17 ET39 5x114.3 M12 x 1.5 64.1
215/35 R18 8x18 ET39 5x114.3 M12 x 1.5 64.1
And this from an Evo forum:
The stock Evo wheel is 17" x 8", 35mm offset, 5x114.3 mm bolt circle, 67mm centerbore.
Stock tire size is 235/45R17.
Lug nuts are 12mm x 1.5. They are Mitsubishi-specific lug nuts. They will not work with aftermarket wheels, nor wheel aftermarket lug nuts work with OEM Evo wheels.