Just picked up a '77. There is no air cleaner on it. Want to pick one up. I'm guessing this isn't the stock carb. Or if it is, it's finish has held up remarkably well over the years. I can't find a model number, only the serial. Is there somewhere special I can order an air cleaner for this, or should I contact Weber and ask them. Will be posting more pictures soon of the vehicle. Have a bunch of questions.