Heater core questions

[bronson@inwave.com (Nate Mellom)]

Are MkI/MkII, A/C and non A/C cores the same?  I need to replace the one 
on my non A/C '81, and from the outward looks of it, it looks a lot like 
the one I replaced in my '84 with A/C.
Can someone with ETKA (mine isn't working right now) look up some 
numbers for me?

Thanks,
Nate
'81
'84

-- 
"It is far better to be well fed, moderately wealthy, in good health, abundantly cheerful, victorious and well regarded than poor, sick, sad, defeated and obscure"
    -Poor Richard