Your stock clutch will last the same amount of
time no matter what plate you run.
You pouring
on the coal too hard at too low an rpm is what's
going to wear it out prematurely. And where the plate
is sitting is also going to play a big part as well.
You may not even be able to walk through your clutch.
So it's hard to say how long it would last.
As for what brand to replace it with?
southbend clutches rock. Ask any Cummins owner.