Hi Peter, I'm glad I saw this thread and am here to hopefully shed some light on things for you.
Firstly I'll answer your questions;
1. Rexspeed finish is great. You won't complain especially for the price.
2. Fitment is good but could be better. Basically the way their gauge pods for the steering wheel column works is the top piece of the steering wheel column can be unscrewed and it basically fits perfectly (ish) on top using double sided tape. You'll need to drill some holes in the OEM plastic to allow the cables to pass through (see my comment at the end of this post re: me selling mine). That being said because it's essentially on top of the OEM part, it will now stick out where the OEM piece sat flush.
3. Driver side shouldn't matter.
Now, in terms of issues, I suggest you read my thread first:
http://clubcj.net/viewtopic.php?t=7818
So, will these issues apply to you? In my case, I had a few things working against me;
1. Evo X steering wheel does not have reach adjustment. This means that the AEM gauge which I bought protrudes too much with the AEM bezel and hence it hits the steering wheel when turning. This wouldn't be such an issue if the steering wheel could be adjusted for reach.
2. The AEM gauge does not sit flush and with the included bezel (which looks awesome I might add- refer to my gauge issues thread above)
3. Evo X seats cannot be adjusted for height which meant that in my low position, I was unable to see the bottom half of the LCD screen in the dash- i.e. the manual gear indicator for the SST and the fuel gauge. Fuel gauge is less of an issue but the manual gear indicator was a deal breaker for me since I rely on this at the track.
Now, issues 1 and 3 may not apply to a non-Evo CJ Lancer but as I don't know for sure, I urge you to check to make sure you can move your steering wheel reach forward and/or your seat height. Issue 2 can be overcome with either moving the wheel, or by choosing a different gauge.
In terms of the dual gauge pod which you are looking at- I considered this but the reviews from US forums were not positive because it blocks the bottom half of the tacho AND the speedo (i.e. the speeds you need to avoid everyday 60km/h cameras) in the Evo, but again you'll need to double check in the CJ Lancer if this will be an issue for you. Alternatively if you have something like an OBDII display (e.g. GReddy Informeter Touch) then this isn't so much of an issue.
Note: I am selling my single CF gauge pod for cheap since it wasn't suitable for my needs >
http://clubcj.net/viewtopic.php?t=7924 ... and if someone is too scared to drill themselves, I'll chuck in my spare steering wheel column cover which is already pre-cut to allow wires to pass through easily (courtesy of LZY_EYE's skilled craftsmanship) for $20.
ps. Thanks also to spareparts and LZY_EYE for all their help (i.e. all of the hard work) in installing this.