83 Ur-q Radiator Q's

[David Ritter <dritter@mich.com>]

Hello,
I will be replacing my main radiator soon and I'd like to hear about
BTDT's from those of you who have already done it.
I recently replaced the Aux Radiator with one of Scott J's generic
models, so I'm already down to a two tube setup on that end. It
appears that the Original equipment # 857 121 251B is only different
from the 4KQ # 855 121 251F in that the Ur-q part has the third small
hose connection for the aux radiator. Since mine is already capped at
the radiator, it would seem to make sense to get a compatible
radiator. Is the 4KQ part the same size otherwise? Are the mounts the
same? 
I know some have ripped out the Aux altogether and I'm not really
considering that option at this time.

Thanks,

David Ritter