I wish my car came with an LSD...preferrably the 3.15 out of the M5, or maybe a 3.46, but any lsd is going to be in the 5 grand range...I don't get it, BMW put a 3.15 (non-lsd) in e39 540's with the autos, but the 6-speeds only got 2.82 (or 2.9, somewhere around there)...But I'd love an LSD. As far as options go, I pretty much have everything I would want in my car...the rear sunshades would be cool, but it would be one of those things I'd never use but want it just because it's neat. Same goes for Navigation. Instead of a tape deck in dash, I'd rather have the cd player (though it comes with a 6-disk changer, but it's in the back). I've looked at the cd players that go in the place of the tape deck, bmw makes a nice one which can play mp3 cd's and has an ipod hookup, right now I am utilizing the tape deck with one of those ipod hookup things. I'd love to get better than 15mpg too.
As far as custom work, I'm planning on getting a short shift kit and linkage setup for xmas hopefully. I'm looking into an M5 front bumper and M-technik rear bumper, an Eisenmann race exhaust with resonator delete, Angel eye headlights with clear corner lenses(the front bumper and the headlights I will probably get after the holiday season is over), also I want to get an M5 rear sway bar (I'd love to get the front too, but I hear they are a bitch to install and require dropping the subframe) and I'd like to get the Dinan front and rear tower braces. I'd love to get H&R coilovers, but at 2 grand they aren't cheap, and I have heard of a different setup that is coming out which is a damn good setup and costs less than half as much. As for other things, I'd love to get the Dinan mass airflow sensor and throttle body and Dinan intake manifold. The manifold id pricey at 1500 though and the MAF and TB are also pretty damn expensive considering they probably don't give much as far as performance gains (though every little bit helps). Then there is the LSD...I could probably find one in the 3-5 grand range. Then there is the supercharger. Dinan makes a supercharger but the package is 30 grand. There is another company who makes superchargers specifically for my car and they are around 4-6 grand I believe. Other things would be sound system upgrades...the bmw sound systems aren't that great (well, not low volume anyways...turn them up and they're wonderful). My woofers are shot so I want to look into some nice subs for it...I'm thinkin a couple JL W7's but we'll see.
Sheesh...I guess I better start savin :P