Hi Paul,
The current 3.5 Briggs sloper engines are quite good and are no where near as rough as the earlier style upright older Briggs designed power plants were.
I've recently bought one myself and installed it on my 20 inch Solid deck and it's probably the best improvement on the machine that I've experienced.
Cheers,
BB.
Ok, thanks for the sloper engine info BB, your knowledge and experience is very useful and I greatly appreciate you sharing it.
Was there any noticeable difference in vibration between the sloper engine and the vertical?