I know this has been done (have tried to contact the guy, but no luck yet), but does anybody know the how/which/where/whys of it?

I am thinking of buying this:
http://page12.auctions.yahoo.co.jp/jp/auction/p6123452

Obviously it's going to need some bodgification, but how much and how hard is it?

Any help appreciated.
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MC28 SE -sold-
MC21 with RS250 engine -for sale-
MC21 race bike -soon for sale-