Buying Parts - Had a spill

[MrBob_imp]

Here is an update on my current parts list that I'll have to replace. The biggest ones are the instrument cluster and the headlight. I'm ok with going aftermarket, moreso with the headlight as I would like a bit of an upgrade on that. Any recommendations on speedometer? Seems like going OEM would be roughly $1200.

Other than those, here is the below..
-Rear Swingarm adjuster
-Foot steps
-Left Crankcase Cover
-Handlebar/levers
-Turn Signals
-Mirrors

Overall, not too bad and maybe a good time to make some small changes that I've been looking at. Biggest question comes into the speedo. When looking online, when sites say they are compatible. What should I look out for? I imagine they aren't necessarily plug-n-play, but that's just an assumption. Again, appreciate all the help from everyone!

My bike has aftermarket mirrors that I want to replace with stock mirrors. I'd let them go for not a lot of money. They're in black housings in good condition and wide enough to clear my shoulders. If interested, I can provide a photo.
I had two Trailtechs speedos on my DR650 in humid north Florida and both had moisture clouding the screen.