Hi,
I recently got a 1970 CB175 for a heck of a good deal, but the engine is, suffice to say, defunct. The pistons are rusted onto the cylinders and I am not into engine work. I looked on ebay for another motor and found none, so my question is: are there any bikes that have a similar engine (I know the cd175 has similar, but two carbs), a bigger bike that fits in the same frame (the CB200?), or am I wasting my time and can get the engine rebuilt for the same price as a new engine?