all this chat about hi-perfing a 235 is a bit beside the point, mater wants "a little more power" for a tow truck, which really is torque, and what one could get for a reasonable price in a 235 wouldn't be noticeable pulling a 2nd vehicle .... either put up with the speeds your grand dad had or go V8, materman
and Curt, getting a torque plate for a 235
shouldn't be hard, and the price wouldn't be bad if you were in a position to rebuild enough engines
Bill