Precedents are whole new carts. The 05s have 9 hp like the rest, but the 06 and newer models have the FE350 11.5 hp. They are supposed to be ultra reliable, but aren't all Club Cars?
I've NEVER had a problem with mine. I mean it's a 92, but never anything wrong with it. Other than I the old engine I had that needed rings. But I got a newer engine and it runs great.