Sn95 Rear Axle Swap Questions

all the 94-04 gt/v6 rear stuff is the same, yes. the axle tubes and axles are longer on the 99-04 cars, but the mount points for the brakes are the same relative to each other. where you want specific 94/95 stuff is just the front spindles, and the booster/cylinder if you want to go that way.

as far as a parts list for the rear:
94-98 axles (axle shafts are the same between v6 and gt)
94-04 calipers and rotors
caliper brackets
anit-moans (not NEEDED, but nice to have)
soft lines from calipers to axle
if you can swing it, hardlines from axle end to where the chassis softline is. i forget exactly where you need the adapter for the fox-to-sn conversion here, its either at the chassis end or at the caliper softline end.
parking brake cables you'll have to get aftermarket and do some tack welding on the handle (i THINK these cables are '93 cobra stuff, at least the one from the handle before it y's off is)
on the other end you'll need a proportioning valve with a gut job on the stocker, as well as a 3-2 port conversion for the cylinder (aftermarket for this, can build you own on the latter, mm has one pre-made but its kinda $$ for what you get)

Can I use the rear calipers from my '95 GT with the caliper brackets on my '03 IRS I'm swapping in?

Quick question since we are on topic here.. I have 04 cobra front brakes and 95 gt rear brakes.. Will a svo master, booster and prop valve work for me or will I need a different master? I have all this already so would be nice if I didn't have to buy something different.. Its going in an 85 Gt.