1991-97 March perf Pulley 3.9,5.2and 5.9

I have a set of March performance pulleys for 91-97 3.9,5.2 and 5.9 engines
These are the 7 rib part # 10511 for the crank,#10512 for the water pump and #211 for the alt.
I don't know the difference for the 98 and 99 models but it says they fit 91 to 97 and don't show a listing for 98 and 99 motors so i don't know which ones would work on those motors but i'm sure they would know
They claim 12h.p at the wheels but its been so long since i ran these.
I am asking $50 for the set plus shipping
I am in Brantford Ontario Canada