Just received my Mopar 4340 4" stroker crank this morning,and a quick inspection revealed that there was a slot for a crankshaft key for the crank sprocket. Does anyone have a part number for this key that goes in this hole? Would one of these work?

http://www.summitracing.com/parts/dcc-5249822/overview/

If it is machined for a "Woodruff"( I think that is the coorect name for them ) measure the width and length of the keyway and go from there A Woodruff key is like a half moon, the other square keyways are half a square the same depth all the way from end to end

Something like this:

http://store.440source.com/Woodruff-Key-New/productinfo/101-1018/

Gosh I really had a brain fart when I posted this question...It is the crank woodruff key that I needed (I don't know why I called it the "key"...like a secret or something lol) and I just realized that I could pull it out of my old crank and pop it into the new one..DOH

Thanks for the info though guys!