No Paper - No Worries

I'm building a racer.(something like this)  An XLR, TT, old-time Class C racer that could hold it's own back in the day against any amateur racer.  A capable machine in the hands of a semi-pro.  All the builds you see are usually "titled" stuff that looks like a race bike, but it's not - and it has a license plate - all legal - and all that jazz.  No title kinda snuffs your plans if you can't hit the street - and that's too bad.  I've got an old Sportster "Scrambles" chassis that someone raced at local club events.  Parts cut off, stock parts missing.  I got a beaten and abused set of cases someone blew all to hell, with hot cams, hot heads, weird pistons . . . and ball bearings.  Why not build an outlaw?  A bike you sneak out of town and hit the gravel.  A bike you load in the back of your truck - and race around the fairgrounds.  Dirt on the tires.  Mud on the motor.  Maybe enter an "ol man's" scrambles event - or short track?  Exhibition.  Something to look at in the shop while sippin' a beverage.  Something to start up and let your friends take a ride.  A big cube mini-bike basically.  A waste of money and time for a few short minutes of fun.  
A complete bike-nut approved build.