Peter from TII tells me that you can get a 2.1 water boxer from S.A.
that is a 10.1 engine with more H.P. But you would have to run it on
super unleaded. As the fuel in S.A. is a higher octane, and they run no
cat and no 02 sensor. Check out his web page for more details.  Bob RWK
Enterprises Placerville Ca.