Understood fully that 544 was close to the wind (pardon the pun) for the J200, but in Jaba's defence, turning a two seater into a single seater does seem wrong compared to turning a 4 seater into a 2 seater.
As for the environmental aspect running what 160 hp for a single seater, as long as the pilot / owner is happy with his carbon footprint then I guess that's ok