Only one of the Sway bars in a Sport is larger than the regular bar. Can't for the life of me remember which one it is now. I'm pretty sure its the rear bar that is larger. Anyway, I've been told that it isn't a good idea to get too large a rear bar, without an increase in the front bar. (I think its something like the front should be larger or the same size as the rear). With that said, look up the stock sizes for your car and get the bar that is closest in size to your front bar.
Edit: I just looked them up. You've got a 1.06" front bar, so I wouldn't go any larger than a 1 1/8" rear bar (1.125").
Of course if you can get a set of 89 SC bars you'll save money and be able to get a larger rear bar. The 89 SC's had a 1.20" front bar and a 1.10" rear bar.
In case you're curious as to the "why" about all this. with the larger rear bar you can get excessive oversteer (I think). Though most cars are manufactured with a little understeer built in as they feel its safer for the average driver.
1997 Thunderbird Sport
destined to remain stock
1997 T-Bird GT 4.6
80 MM Mustang GT MAF - P&P'd Mustang GT TB and Intake Plenum - PI Intake manifold - PI Heads
Mark VIII Torque Converter - J-Modded 4R70W transmission - Mark VIII Aluminum Driveshaft - 3.73 gears
PBR Brake Calipers - Eibach Springs - KYB Shocks
'89 SuperCoupe front and rear sway bars
SCT Chip programmed by Lonnie Doll
255/50/16 Falken Ziex ZE-512's
True Dual exhaust with Magnaflow DI/DO muffler
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Last edited by Traveler; 04-16-2007 at 11:50 PM.