I went ahead and ordered the kit and received it yesterday.
Install was pretty simple:
1) remove 1 bolt and two nuts to lift out the air cleaner assembly. Remove the gasket between air filter and carb.
2) Remove the plastic cap and electrical connector from the top of the existing carb and lift it out over the two bolts.
3) Put in the replacement carb and re-connect the electrical connector at the top and replace the plastic cap. Replace the gasket between the new carb and air filter.
4) Connect the propane hose with the supplied fitting to the small lp supply hose coming out of the top of the new carb
5) Drill a 3/4 hole below the access door for the lp hose to pass thru.
6) Cut the existing gasoline supply line and install the supplied shut-off valve to shut-off fuel when running on lp/natural gas
7) Drill a couple of small holes to mount the low pressure regulator on the access door
8) Connect a tank with a high-pressure (BBQ) regulator to the inlet fitting on the high pressure regulator.
To run on gasoline, you turn on the new fuel shut-off valve and start as normal.
To run on lp or natural gas, you shutoff the gasoline valve, connect to the lp/nat gas supply, press the prime button on the back of the low pressure regulator and start the engine as normal.
Initially it wouldn't start on lp, but I followed the instructions to adjust the load-block on the regulator and now it starts right up and runs smooth.
We normally don't go thru LP fast - so figure we'll always have one of the two tanks on the TM that we can use for the generator.
Will post once we've used it more, but so far I'm happy with the kit (though I just voided the mfg warranty on my brand new generator...
)