Re: Briggs and Stratton 2hp
i'm not sure about any actual kits, but you can get a lot of the parts you need from both sickbikeparts.com and staton-inc.com
they seem to have some of the best prices and quality parts from what i've seen researching for my own projects...
there's a number of companies out there selling all kinds of custom parts... really, you're only limited by your own imagination...
GO BIG OR GO HOME!