ziggy, you will like the OS. It is very easy to tune, has excellent power.... and the parts are cheap compared to the RB's, JP's and Novarossi's. Replacement rods are about $33.00, not $70 like the REX, Rossi RB. Piston/Sleeve is $110, not $230. +++.

The money saved will allow you to purchase more tires, which is probably the most expensive part of racing 1/8. Your O.S. motor will last a few years if you take care of it. Tires last a few runs (depending in the surface) and cost $35 to $50 per set.

At some point later, if you are handy with a dremel you can make small mods that will give excellent results.