[Elecraft] Duplicating the KPA100 LP filters

[Vic K2VCO]

I have a very nice well-built Henry Radio 100B solid state amplifier. 
Like the KPA100 it uses a pair of 2sc2879's to produce 100 watts.  It 
has a heat sink and fan that looks like it would be enough for a KW! 
Unfortunately, it doesn't have built in LP filters so it can't be used 
to feed an antenna.

I'm thinking about duplicating the KPA100 LP filter section so I can use 
this amp as an output stage for another rig.  This sounds like a 
no-brainer, but I wonder if there's any reason not to do this?

Also, does anyone know the manufacturer and model number of the relays 
(K3-K12) that Elecraft used?  I would have to take my KPA apart to look!
-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco