I just got this 16" Sensation commercial push mower. I think it's from the '70s. The engine still runs but it is not very reliable. I want to replace it with a commercial engine. Does anyone have any ideas of what engine wold fit this small deck? I don't think they make a 16" deck anymore so I am willing to put some money in this. The deck is cast aluminum and is in perfect condition. It has a 3 HP briggs on it that has been used a lot. Here are some pics.