[R-390] R-390 <> R-390A IF decks?

[Gary Gitzen]

Hi R-390,

Please reply to the R-390 list on this one, since it may be
of general interest. If you want to reach me directly, please
use   user3 a at t uwave  dot com , since my "r390a" address has
been compromised.


I _may_ have the opportunity to obtain an R-390 IF deck.
I'm wondering if it is a "drop in" to an R-390A? 
What (any?) changes are needed, other than possibly tubes
and fil wiring?
Is this a "good thing to do"? While I love the steep skirts
of the 390A IF deck's filters, I've heard Very Good Things
about the R-390 IF deck's L-C sound. 

Thanks for any help/info/insights.

Regards,
Gary