[Ron Sutton]

As you probably know, there are more differences in those kits than just the calipers.

The rotors in the Aerolite kit are 2-piece with a iron rotor & aluminum hat. Whereas the rotor in the Superlite kit is 1-piece iron. The rotor size difference of 12.88" versus 14" is somewhat significant, equating to a 10% difference in braking torque. The 14" rotor is 1.25" wide, so the vanes are wider, which provides more airflow for rotor cooling. The 14" rotor has 72 vanes compared to only 34 for the 12.88" rotor. Again, more airflow ... just like a fan having more blades.

The 14" rotor has more mass for cooling, so it will handle the higher braking temps seen on road course track days better. Where the 12.88" rotor has an advantage is less rotating weight, of which I'm a fan of ... as long as you have adequate cooling for your use. Of course if you were buying brakes to handle the heat from heavy road course use on track days as a priority, you wouldn't want the drilled rotors. You would want the slotted Spec-37 rotors that are available in these same kits (for less money).

Another difference are the pads. Not the compound, but the size. The surface area for the Aerolite pads are 11 sq in versus 8.2 sq in for the Superlite pads. Pad volume differs too. Aerolite pads have 5.2 cubic inches of pad material whereas Superlite pads only have 3.8 cubic inches. That means the Aerolite pads last 37% longer & will handle the heat 37% better.
The pad prices are different ... a little. BP-10 pads for Aerolites are $79.95 & are $65.94 for Superlites.

The issue with both of these calipers is ... they have too small of piston area for optimum braking. Both of these calipers only have 4.04" of piston area ... which in my experience is too small ... and provides less than optimum braking. Unless you step the brake pads up to high CoF racing pads ... which have their own issues ... tons of dust, fast pad wear, much faster rotor wear & the pads cost double.

With the Aerolite 6 brake package, I always upgrade the caliper to the 5.40" piston area version ... which costs no more. You can't do that with the Superlite brake packages, because there are no Superlite 6P calipers with more piston area. 4.04" is max in that caliper family (for a design reason).

My reason for sharing all of this was so you could truly compare these packages and see the differences that matter. You may be happy with the Superlites & save some money ... after you test a few pads & find ones that will really stop the car. But the Aerolite package has a lot of benefits you get for the $700 difference (actual selling prices, not retail).