E-mailed pics to a restoration guy and he had an answer for me on the yellow one. It's a YL2C, Trailmaster 100. WOO HOO Now I know what to start looking for! I'm going to find the vin stamp on the blue one so he can determine what that is so I'll be able to bring them both back to life. thanks for the good guesses 'cause those models searches are how i found the resto guy I did