I'm sure you are all farmilliar with the M3LTW we (well, a lucky few of us) got here in '95. well, naturally, europe got that car (M3GT is the Euro designation) as well as a four-door version.
I took a ride up to Turner Motorsport last Friday to see wether the LTW or GT Sedan rear spoiler fit the ti better.
First thing I'll say: SPEND THE MONEY FOR FACTORY PARTS. They did not have a 'genuine' LTW rear wing on hand, so they dragged out a replica for fitting. This replica was an absolute piece of crap. The base was twisted, and the wing itself had cracks all over it. Oh, yeah: it didn't fit too well either (but that may be partially due to the differences between the sedan and coupe`)...
Then they brought out the factory M3gt sedan wing base. This is a VERY nice piece. very good construction, totally flat (no twist) and fit the rear deck contour perfectly. This is the one to get (if you're crazy like me...).
The forward ends of it overlap the rear window a bit, but it does not need to be cut around the rear wiper (if you have one) as I feared. I'm going to take a good look at it in a few weeks, and try to elegantly fit it over the glass. it also uses adhesive in addition to the bolts to keep it located as well as weather-tight on the deck.
This wing does not come with the extension pieces, as those are NLA from BMW. I managed to find a NOS set, so I will have the option to install them. (FYI: M3GT's did not use the riser blocks as the M3LTW's did).
Price? just under $900.00 with the tax. BUT, I did not pay shipping, which would have been more than the tax. This box is large as well (but not as large as the LTW splitter's box). Oh, yeah. it also comes with a set of filler pieces that go below the regular M3's splitter, on the outer corners. They use the existing mounting holes for the regular splitter, so they are an easy fit. If you did not use them, you could sell them off for a bit of a 'discount' on your purchase price... | 
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