hey new member to this forum (this is a awesome forum by the way) still trying to figure this out but anyways i got a 1970 521 a few weeks ago and i went to put a new thermostat in and one of the bolts broke off in the housing, i tried to tap it out but did not work. ANY HELP ON WHERE TO FIND A NEW/USED THERMOSTAT HOUSING???????? any help would be awesome. tried google and ebay but had no luck. ANYONE KNOW IF ANY OTHER MODALS WOULD WORK??