deluxe heater... I think

[mtruckr]

On a '66 Suburban... we installed another 305 V6. It runs fine, it's a beater truck.

But the breather cap is now on the firewall end of the passenger side valve cover, and it can't be opened/removed because it's too close to the heater. (THINK ahead next time !)

Can anyone provide a basic idea of how to disassemble the heater so that I can trade valve covers and then put it back together? I have removed the heater top cover, but then run out of obvious nuts/bolts to remove. Looking in the passenger footwell generates blank stares...

Thanks-