I would look at the wheel bearings for each model. If the wheel bearings from Mazda are same part number, then the brakes, hubs, and etc should cross over.
I don't *think* the GSL is the same as GSL-SE, but am not certain in any way.
From a swap standpoint, I think the mounting points to swap everything is the same-- my non GSL-SE car has the GSL-SE strut assembly and brakes installed.
I also have a box of tie rods, adjusters, etc in my spares kit that are all slightly different lengths and they all have OEM stickers on them. when I installed a set of JRZs I purchased from another racer and swapped with the Advance Design that were on the car at the time, I had to do some tie rod swapping from my spares bin to make all of the pieces fit.
don't know if that helps you in any way, but it's what I gots.