Gearing ?

I agree with the 273 concept. If I was made of money, I would have a turbocharged one.It would make 400/450 hp and do 30 mpgs, and it would pull the front tires.
And you might hear the cam if you listened really hard, but I doubt it. Well 30 might be a stretch , but I can try.
Ima thinking .8 hp/cid NA,then just stir it in. Oh yeah, hi 20s for sure,lol.