Looks like a drain but haven't noticed it on mine. Found the breathers to be reasonable I thought. I usually run them into the engine bay with old style petrol filters on the end.
Since I'm home for a few days I would put mine on the ramp and have a look but my shed is now full of household stuff, thanks to my daughter, we aren't staying around though, end up being babysitters and scholl bus drivers.
I couldn't get over how the body had buggerall sound proofing underneath, I sprayed the black muck all over mine and the more fluid stuff thru the chassis, horrible job to do, if wasn't able to walk under mine would certainly pay someone.
I reckon the mod to protect the water drain on the fuel filters is a must, ALDI floor mats, the 4x4 ones fit perfectly.
I pulled my plastic engine cover off just after I got mine and hung it in the shed, today doing my weekly
"Look and See" I find the cover where it clipped onto the engine had been slowly wearing thru the wires to No1 Injector, one wire was showing copper, all nicely repaired now but I'm so glad I pulled the thing off, I've got a collection in the shed now as I pull them all off, I think they hold the heat, collect heaps of dirt and crap, more importantly things can be happening unseen until too late, like the dreaded black death. ( When the seal on an injector lets go just slightly and this black mass slowly expands all over the place, not nice and the injector is sort of glued in)
You'll enjoy your Colorado
@boots33 mines been good to travel around in so far , would like electric seats though.