Sonic, you can expect your 105 to run just a tad stronger (about 50 rpm) than a 102 "Evo", which means a 27-10 Menz-s at about 6200 or so after break-in, and a 26-10 above 6700.

Since the 105 shares the exact same crankshaft/rods with the upcoming 110 Xtreme, it will be possible to swap pistons/cylinders to gain all the power advantages, and lighter weight of the 110, if you should desire to do so. The 110 also uses a different plug, so a different ignition unit will be necessary.

Contact BME for more details and pricing.