Does anyone make a 6.5 with decent midbass, what if I go with some high end 6*9's and back with a sub?

 

Adire Audio Koda gets my vote. If those are too expensive..... look into the Kicker RMB6's.

 

Just say NO to 6x9's

 

$80 is cheap if the Kodas deliver.
What is a recommended tweeter that has the correct impedence ?
How much power @4ohms?

 

That is $80 EACH. If you want a pair..... then you have to buy two. Tweeter? If you are trying for a component set, then buy the component set.

 

you can make any quality midbass sound good. If you build a enclosure for the speaker, deaden the door or rear wall, use some polyfill and put some power on them. And when I say power I mean more than 50 watts rms. A speaker put in the hole, running off a radio will very seldom deliver good midbass. Example in the rear I put dynamat extreme on the wall where the spk goes dampening any vibes the wall would catch. I put polyfill all in the wall then installed the speaker. I did one this way and just installed the other speaker in the uprepped side and there was a world of difference. The prepped side had good midbass and a fuller sound. I did the same up front but I buit enclosures out of the factory rain guards. My midbass is so much better I can turn my subs off and still have good bass.

 

Is it possible to build an enclosure behind the front doors factory location? without messing up the window operation?
When you say 50 watts, is that at 2 ohms or 4?

 

yes it it possible. You just have to build a small sealed chamber not like a huge box in the door. You take the factory rain guard and use some fiberglass and make a speaker baffle out of it. At leat 50 watts 4ohm per side. I personally have 200 watts a side.