65 Electra heater core

[wmsue]

Can anyone tell me how much of the dash I must remove to gain access to the bolts and remove the heater core from a 1965 Electra Conv 401" w A/C.

I removed the engine compartment firewall cover and have started on the inner (under dash) cover trying to gain access. I don't want to take out the entire dash just to find out the bolts are any easier to get to.

The factory manual doesn't help and I can't locate my Chilton or Motors manual.

Any help would be greatly appreciated.

thanks

Bill