A 292 would match up better to a th350. Any of the above engines would work. The 250 and 292 would likely be easier to run a compressor and power steering pump on. It is possible to run them on a 235 or 302, but it would take a little more figuring. I know there is a generator option with a power steering pump attached to the back in tandem. Those pumps tend to be pricey, and most people prefer the reliability of an alternator to the generator anyway.