I finally got everything put on:

GP rear spoiler
GP rear diffuser
GP coil over suspension
GP under engine panel
underbody panels

Handling is much improved. And, I think it looks great. Attached some pictures.

 

couple of more pics

 

looks good.

 

Yep... bet she handles as good as she looks now!

 

I have the undertrays and rear diffusers on my 2013 JCW and feel the car is absolutely stable in 30MPH+ crosswinds. Did you notice an increase in crosswind stability after adding the GP parts? I had the GP parts installed new so I don't have a before and after comparison.

 

How'd you get the rear glass to work with the rear wiper?

 

Another poster on the site made me two brackets that matched the ones that came on his GP. I glued them on, and the spoiler fits right over them.

The GP rear window only has a couple of metal brackets glued on it. The bracket mounts there and uses the existing mounting locations on the top of the hatch where the old spoiler mounted.

MINI won't sell the brackets separately. You could buy the rear glass and have them professionally removed and reused on the back glass with the wiper if you wanted - but, you'd be out $250.

As far as stability in cross winds - I'm not sophisticated enough to know. I just know the handling is much improved with the GP suspension, and I figure all the other aero pieces must do something.

 

In my opinion, out of the thousands of MINIs on this site, definitely one of the "Top 10 Best".
Verrrrrrrrry nice.
(More photos please.)

 

Looks great,

 

Thanks. I loved the added stuff on the new GP and was pretty shocked that I was able to get these add-ons - starting with the diffuser. It fell into place after that.

By far, the best part is the GP suspension. I never thought about upgrading my suspension, and thought my handling was due to a poor tire choice on my part. Now, I can throw this thing into corners with confidence.

Here's another couple of shots:

 

Car looks great, let me know when you want the GP brakes

 

That rear quarter shot looks $!

 

Your mini so cool!!
How much for roof spoiler GP? Get from MINI dealer?