Ls crank, ls rods rebushed for a small pin and the tech 43 pistons in 82mm will give you close to a 1.9L with a R/S of 1.54. Not a bad sleeper setup, everyone will think it is a 1.6L.

I don't see a problem with this setup, not sure on the mileage that ring package can handle though before needing to be re-ringed.