Wolcottjl / Seldom Seen Slim
I'll add that SAE paper to my list, but is was running octane and not nitro. Still, it looks a good read. Been ordering papers from SAE in batches about twice a month for some reason.
Speed Limit 1000
Nitro with carbs is old school. It is a very dense fuel and balancing the jetting with the engine, air, and fuel temperatures, air density and moisture, and the vacuum draw of a carb is an art all its own. I imagine the artists working this craft are mostly over with the various flathead roadsters. Injection provides a very positive metering of the amount of bang in each ignition. Due to the small size pulsed-electronic injection looks like the easiest route for now. It's just too small for the usual pump and pills.
JL222
The small engines running boost have been hampered by how to adapt oversized hardware and then get the mismatched bits to run properly. You'll notice from the records the small boosted-engines have more trouble getting speed than their normally aspirated cousins. To run a turbocharger the impeller and turbine will have to be cut down and both the hot and cold housings redesigned. My engine models are not that far along yet, but yes a small turbo-gas engine is in the mix. The small blown-fuel motor is another problem in proper hardware.
Scaling your numbers would have just over 150Hp for the turbo-gas from 175cc. My numbers run about 40 Hp on gas, 100Hp for turbo-gas, possibly 75Hp on fuel, and the piston limits blown-fuel but 150Hp looks like the upper limit with a working piston design. I don't believe numbers like that have ever seen the salt in such a small engine. So until I build, dyno something and then actually run a vehicle for time, its still funny numbers of what should be possible.