Replacement distributor gear?

[2000tahoeZ71]

About to drop a new crate motor in my Tahoe, as my other started having severe misfires on 3 & 4. 3 was coolant fouled and 4 was caked with oil. Figured while I am there I would go ahead and replace the dizzy gear as I didn't do it when I did the intake gaskets two years ago. Anyone have the part number on the metal replacement gear?

 

[OR VietVet]

Gm 10457356

 

[2000tahoeZ71]

thank you sir

 

[SunlitComet]

hmm. got a few hundred to drop in a new msd dizzy? looks good on a new engine.

http://www.amazon.com/MSD-Ignition-5592-Street-Distributor/dp/B004A6679S/