Ok...This ought to stir the pot...

Krooser said
I'm not saying it's not a good idea...in my case I need a 3/8" pushrod with a little thicker wall for the 400#-ish. open pressure springs I may use.

What about this new mortal sin of not correcting your rocker arm geometry...
If you don't call B3 racing and have this done your stuff is junk...