Hi,
I'm trying to figure out what type of rocker arm and length of pushrods I would need for a Chevy 350 engine with Trickflow Twisted Wedge heads.  The hardened pushrods pushed off the steel roller tipped rocker arms that I already had in there.  I was told at one point Crane Cam roller rockers would do the trick, but there seems to be a wide variety based on alignment/non-self aligning and ratio.  How would I find out what ratio (1.5 or 1.6) and whether I need non-self aligning or left/right alignment?  
Any info or pointers for further investigation would be a great help, I'm not a mechanic, just a tinkerer.
Info:
Chevy 350 SB
12-210-2/268H Comp Cam
Trickflow Twisted Wedge Heads

Thanks in advance.  

The only way to correctly get your pushrod length is by using a checking tool.  You call call Trick flow to ask for a good recommendation but that may or may not be the best bet.  As for rockers you can use either 1.5 or 1.6 and you should have guideplates on your heads so you need NON self aligning.