[Elecraft] Older Serial number K3

[Roy Morris]

After hardware mods are made to the older K3s, they are virtually the same as the latest serial number K3s.   I have a 300 series and a 2800 series K3.  I have made all mods, and they are identical in every way.  Roy  W4WFB

If I get an older serial# and make sure all firmware updates are in 
place is it essentially the same radio as the newer version?

Thanks,

Gary Slagel/N0SXX