Steve, I'm pretty sure with the PCM's you have to order a specific one for your car, but they would still come from the same companies that the ones for GP's would. Also, you might find a little but more help on either 3800tech or clubgp, both these forums have several members with the LSS's and other vehicles with the L67 that might be able to answer your car specific questions a little better, either, great to have you in the 3800 community, welcome aboard.
Also, One of my buddies has a black 95 talon that he just swapped a 6 bolt into, he's got a T28 on there now with countless other mods and plans on going up to a Big16G this winter, just noticed that you owned one and wondered what kind of toys were on it, I'm guessing your intercooled to be making 450hp, whats your setup???
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VS Cam,CompCams lifters,ZZPpushrods,Rollmaster double,4"intake,PLog headers,3"exhaust,IntensePCM,3.3"mps,ZZPHDTrans,3.29gears,2500 stall,GMPP adjustable suspension,TB spacer,160*tstat