you'd probably be better off with a second kit that you know you can source parts ,
are spare parts( ie disc) readily available for your kits??let someone else do the hard work the calipers in my kits are 300zx t/t 4 pots.
They sure do but there is some minor machining of the discs etc. But the caliper bolt straight to the hubs.or just use almera n16 hubs like me and they bolt straight on.