Found out a short throw shifter wasn't installed in my WRX..

[cout]

So... it turns out that the boys at Carlsen Subaru forgot to order and install the short throw shifter I had told them to for my WRX. Didn't notice it right away since the shifter in my RS used to be somewhat sloppy, and the shifter in the WRX is tighter. But upon investigation of the delivery invoice, I found it wasn't one of the options. Since now I'd probably be installing one with *cough cough* help during an InstallFest, I'm looking for your opinions... Is this a good thing or a bad thing that it didn't get installed? Is an aftermarket shifter like the Kartboy better than the STI shifter I had originally wanted installed, or should I order up an STI one from subaruparts.com (currently on backorder)? The Kartboy is obviously cheaper, but I don't know much about the performance/quality difference. I'm willing to sink my money into quality, but I'm dumb here and don't know which one is the 'quality' one. And of course, does installation of the Kartboy, (or STI for that matter) void the warranty?

And for those of you who don't know me or the nick, I'm the guy who ran home to grab the power drill for Necromancer and bobski so they could get their Hella's installed at the last InstallFest.

D aka Cout