I remembered that when I tried to get a friend interested in VMX about 23 or so years ago his friends at a local cycle salvage sold him what he was told was a Cycle Factory-framed XL250. However, it was a short travel Evo with what I think are the Wheelsmith Maico forks with extensions on the bottom (forks now in a box in my storage) and not a pre-75 bike that he was supposed to be looking for (I don't think AHRMA had any evo classes at that time). Carl had never ridden dirt so he basically took what they wanted to sell him as being what he needed. That project ended up going nowhere and being given back to the sellers.
I rummaged in my box of photo prints tonight and found some photos which I thought people might be interested in. There are four that show the bike "as purchased" and the other two show it after he'd cleaned it up and changed the forks to something with 7" of travel.
I have a veglia recollection of the front brake being an aftermarket item (Fairway Yamaha in SoCal comes to mine as the people who sold it).
cheers,
Michael