I have a 2000 Omc 50, runs pretty good other than the normal idle difficulty on these motors. Does anyone have much experience hopping them up a little. I am looking to open up the top end on this motor. Compression is 150 on both cylinders.

My ideas are:

carbs off a 75 stinger? if they aren't already the same carbs on a 50
changes to the tuner?
Can I up the timing past the set 19*
Anything else?

I'm not looking for 80mph or anything but I'd be happy with any increase