96 - 98 pulleys on an 02?

I have a set of aftermarket pulleys that were never installed from a 98GT. They are billett aluminum w/out any casting numbers other than "MAS 177" on the accessory, MAS 175 on the water pump, and MAS 176 on the crank pulley. Who ever made them used a hand held tool to initial them.

Anybody know who made these and if they'll fit my 02?
 
I have a 03 explorer pi motor, 98 front cover with the 03 water pump pulley and crank pulley. It did look a bit differnt than the 98 motor crank pulley but it should not matter as they are internally ballanced.

I am not 100% sure though which is why I used the one from the 03 not my old 98 one.
 
So I've determined that this is a BBK #1550 set for 96+ models. The differences are only on the stock water pump pulley. Design seems a bit funky putting the BBK crank pulley inside the stock damper...

Anybody have a installation tips to share?