Heater/blower firewall ring??

Anybody know where I can get the metal ring for the engine side of the firewall that goes over the studs on the heater/blower motor?? When I purchased my 68 the heater was taken out of it so I am missing that part it seems. I could also use it to help fix the enlarged blower motor hole along with many other holes that the previous owner tried to make what seems like swiss cheese out of the firewall........grrrrrrr!!!!
I am also missing the bracket that goes over the heater hoses on the firewall as well as the J hook that holds the heater box under the dash.

Thanks
Derrick