can someone email me a pic and fax me a tracing of the large heater core hole on the firewall i am trying to replace the heater. 70 chevelle non ac car (fax 718 643-1356) fax is always on. i see the cut out in the assembly manual but there are no measurements listed. thanks

sorry guys i need the tracing of the rectangle opening also

Did you get what you need? If not got the son's apart right now to install an heater core and tracing it would not be a problem. Let me know Pete