93-97 lt1 .Anyone know the size or part # for a serp belt if i'm running the march under alt and underdrive crank pulleys without a a/c compressor?

thank you

p.s I dont want to run ac and no a/c delete pullley trying to bypass the ac compressor with underdrive pulleys

 

I don't believe it is possible to run without at least the a/c delete pulley.

 

The March UD pulley (6_rib 5.375" pd) I use required a Napa 25-060594 belt. I removed my AC and replaced with the gm AC idler option. B.