Oh dear. I somehow ended up in a Honda Shop today.
If you're thinking about replacing the motor on these things, it'll be the best thing you'll ever do. The GX100 is a straight bolt up and go - you just need slightly shorter mounting bolts.
Ideally, a GX120 would have been cheaper, but I am trying to keep my 5/8 steel clutch half, and I couldn't set my handlebars upright enough without plates or bending the bars around the old Briggs, let alone one of these things. I suspect if you have the newer, "kick out" style bars, this will be a non issue and give you more options.
You can also pick up a Briggs 550 or Honda GP160 between $290-$350. There is a lot of refinement to be found in these newer donks.
