300whpej

Ok, so im pretty sure my alternator is trying to crap out on me, but luckily i was given 3 by a friend, but there is a catch, im not sure which the gsr/b16 and which is ls. from what i can use any of them without problems, but the amperage is different between the b16/gsr and ls. anyhow i have two that have yellow denso stickers and one that is pink, which do i need to run?

btw, car is a 95 dx coupe with a b16, converted to obd1.