w2 heads?

Is there a casting date on them? Do they have cast-in rocker arm shaft pedestals? Is there a dual bolt pattern on the exhaust side?

As far as whether or not the econos are worth building, what are you looking to do with the car?
I know that I had to have custom built headers by tti because no one builds headers for w2s.I also had to get adjustable push rods none over the counter.I,m going to be bracket racing this car next season running with 456 gears and solid cam at about 62 up 72000 rpms.Also does any one make a single planum in take for w2 heads?