Vintage Dirt Bike Q & A

Hey all, I just picked up a running and registered '74 MT250. It's a little scrappy and I intend to use it as an around towner. I want to make it into a flat track looking bike and am looking for ideas on a different front end. Usually I just see what bikes use the same steering head bearings and shop frontends that way, since, if the bearings are the same, the triples are interchangeable. So far nothing is leaping out at me. What I want is a shorter, stiffer fork and an 18" wheel. I searched a bit and for the life of me I don't see the "archive" section from the old Elsinore section. Sorry if this has been covered before. Also I'd really like a down pipe.
Thanks,
Duff