The RFX95 circuit includes final amplifier stage and low pass filter. The RFX95 is your choice for 10 meter radio repairs and upgrades. It doesn’t replace the final stage, it adds to it so it can be switched ON or OFF and can be bipassed.

The RFX95HD circuit includes only the final amplifier stage and low pass filter which makes for a quicker and easier installation in some units. The RFX95HD is your choice for 10 meter radio upgrades when the final transistor is good and intact and if you want to have the 95 in or out of line (on/off). This is a complicated modification and should not be done by an amateur.
You should probably leave the installation and alignment to a proven technician. Comply with part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. Further information can be found at the FCC website http://fcc.gov or the ARRL website http://arrl.org. Transmitting using this radio requires an Amateur Radio License. Licensing information can be obtained by visiting www.fcc.gov or http://arrl.org. In Canada, visit http://strategis.ic.gc.ca or http://www.rac.ca