Old school to New school pulley swap

[74sunburst]

Hey guy's,I'm in need of some help.Does anyone have any 1st or 2nd gen Viper crank pulleys kicking around?
I'm working on a project and need some info RE: a Viper crank pulley ie,diameter, bolt hole spacing ect.

I have a "V" groove pulley that is 7 1/4" in diameter, 3 3/4 deep or thick,the bolt holes are 1" apart side to side not on center.The center hole is 2 1/4 in diameter.
I want a Viper pulley to convert to a serpentine set up.
I don't need an exact copy of my pulley just one thats really close that I can modify if needed to make work.Thank's 74runner@live.ca pic's would be great.