[V8] Heater Core Replacement

[toml99 at todomundo.com]

These were all timely, as my spray/tap/wedge the brush's in the 5- 
speed are finally no longer effective, and need to pull that motor  
out.  Pulling the whole box out of the parts car was a breeze, but  
the engine/engine harness/dash and the AC line in the way were all  
removed.  I had a wound guitar string intending to remove the rear  
window with, and after lassoing the sticky seal at the firewall, used  
the guitar string to cut the seal.  I haven't yet disassembled the  
box, but thought I'd just do the heater core at the same time.  I  
recall some had bought crappy aftermarket Heater cores on Ebay  
before.....Where might one find a good heater core aside from the  
dealer?....Tom