Hi: How is the thermostat door unit/frame replaced? The part was bent by a towing company. I'm referring to # 11 in the following page: http://www.corvair.com/user-cgi/catalog.cgi?function=fetch&find_page=NOS-3 The lower shrouds (and the thermostats) are off the car (1960 with 140 hp engine). Regards, Tony Irani