Name that Brake Part (Set)

They appear to be 99-03 'PBR' brakes.

Measure them, and if they are larger than 13" diameter rotors, they are Mach/Bullit/Cobra discs, if they are smaller than 13" diameter, they are the GT 'PBR' brakes. Either is a good setup. Both are aluminum dual piston calipers, unlike the earlier iron single pistons. They are great upgrade brakes.

Some problems:
If they are the larger Cobra brakes, they will NOT fit any rim less than 17" in diameter, and some 17" rims don't fit over them.
If the spindles are from a 94-95 car, they will only be 3mm per side wider in track than an 87-93 car (Wider on a pre-87, but I don't know the exact amount.)
If the spindles are from a 96-98, they will be about 6mm per side wider still than 87-93.
If the spindles are from a 99-03, they will put the front tires 13mm+ (1/2"+) wider than 87-93.

These are some things to consider, especially when dealing with wheel fitment and keeping tires inside the wheel wells.
If you are putting on the spindles, then picking wheels/tires, you can take this into account before hand, but if you already have the perfect wheels/tires, and don't want to change, this can be an issue.

If any of this is a problem, sell them.
PBRs should be good for $150, and Cobras might bring $250 to the right person. (The condition of your set might be a problem for top dollar though.)
(I recently got a pristine set of Cobras for $200, but I wasn't looking for them, they just presented themselves.)

I am pretty sure they are PBRs.
The calipers don't look like my Cobras. I could be wrong though... going totally on memory, and that ain't getting better each year.

those are the v6/gt pbr brakes from a 99-04. same ones I have on my car. with some cleaning they can look sharp, weigh less than half what the 94-98 calipers do, and have more stopping power. Just be aware those likely are the 99 spindles as well which could run you into wheel geometry and fitment issues.

If you find a set of 94-95 spindles, you can keep your front width to only 3mm wider, and these brakes will go right onto those spindles.

I checked out my Cobra brakes, and those aren't it, but stykthyn beat me to it. PBRs.
There is a market for them among 94-98 guys that have the single piston units if you don't want them.
Some of those guys want more braking, without springing for the bigger Cobra brakes and larger wheels they require.

if you put them onto 95 spindles you will need to clearance the spindle slightly for them fit. easily done with a dremel or file.

Clean them up and use them, I did this swap on my 93 over the summer and I think they came out pretty nice.