Robert's buddy is looking for the ' thinwall ' 1963 ~ 198? 230/250 engine . Or maybe a romping stomping 292 factory stroker ? . All are very good engines but suffer badly from cylinder wear / taper due to failure to change the oil enough .
Well my buddy just sold a fresh rebuilt 235 never fired up after the rebuild Someone told him it would lack power after adding a/c and power steering
So , try to steer him to a 250 or 292 , both have plenty of power . IMO the 235 would have been fine but what do I know ? .