Folks...I picked up a set of new in the box W2 Econo heads a couple of years ago, these are the P4529995 MP part number.

My intended use for these is to replace the heavily ported '596 OEM castings on my 360 motor, probably the next build will be a stroker motor anyways, so slightly bigger cubes. This is a weekend driver/project car, not a drag racing vehicle, so the cam lift will never get beyond the .650 I'm thinking.

A set of MP rocker arms (P4876343) has come up locally for sale. Given that my W2 castings are the Long Valve versions, are there any specific MP rocker arms that need to be used in this application? Or will the P4876343 work?

The DCF-173 Instruction Sheet (see attachement) supplied with my W2 Econos references an older MP rocker arm number...so I have no idea if this is a workable combination or not. Given that both parts have been out of distribution chain for a few years now there is no information out there that I can find either.