What parts? The raised port head had an intake from MP in 3 flavors. Single plane small port, large port & a tunnel Ram. A 4th, short lived dual plane *I think.*
Several years ago I looked at a R engine out of a roundy round dirt car. It had w-5 heads but had a W-2 intake with quiet a bit of welding done to it. I asked the owner about it and he said his engine guy liked the W-2 intake better.