[VHFcontesting] Lunar PAG 432 Preamp device

[Dexter McIntyre W4DEX]

After over 25 years of use with no sequencer my Lunar PAG 432 preamp 
died.  I'm fairly sure a DC input spike killed it even though I have the 
standard diode and capacitor spike circuit across the input.  I had just 
moved the 12 volt input to a difference power source which also supplies 
power to a pair of old Dow Key relays. 

So I am in need of the original device number used in this preamp.  I 
could not find the documentation that came with the preamp and A Google 
search didn't find the info.

I have a quanity of old but never used Dexcel FETs designated as D432.  
I seem to recall building a 2 meter preamp  using this device in a 
circuit designed for a MGF1202 and it worked well.  I believe it got 
sidetracked to a repeater project years ago.  Anyone know the specs on 
this device?  I'm tempted to try one in the PAG432.  The numbers match :)

W4DEX