SEMA has done some great things for hot rodding, driven by the aftermarket pars vendors. They have got whats known as the SEMA law passed in many states on licensing older cars and streetrods. Like anything good there is always a catch, in my home state they adopted the SEMA law (good thing) but cracked down on any of the other ways of licensing a car, after reading the state law you can tell politicians got envolved.
Here is a example, if you license a streetrod here in MO, almost every used part must have a notarized bill of sale, as well as a copy of the title from the vehicle which the part came from. Head around to the local swap meet and try to buy a part and ask for both of those, I purchased some Fiero seats at a swap, had the car all done and seats reupholstered and tried to get a title but had no notarized bill of sale or copy of the title from the Fiero they came from, the DMV said don't show up without it, sooooo I had to head to a junk yard and buy a second pair of seats and use the "legal" business reciept to get my streetrod title, as they accept a legal reciept on new parts or formal reciept from a salvage yard (with VIN number on a notarized original reciept. Can't tell the aftermarket industry lobbiest where involved in that part huh?? Was a interesting experience to say the least!