I just acquired a brand new set bare in the original boxes.  Just wondering if someone might know a little more about them and confirm what I was told. And to try to figure out how old they are. I know they are from when world products and dart were partners.

Specs are supposedly
2.05 intake
1.60 exh
200cc intake
64cc combustion chamber
angle plug

  any help would be great.  

What is the part numbers on the heads.  

That is the tricky part no numbers stamped or cast on the head just a few numbers on the box

The box reads 416-737       64a
world products inc
d/b/a   DART II  

From what I remember, those are good heads. Pretty much anything World makes/made is good.  

had a set on my 69 rs/ss camaro.they had bowl work and gasket matched to a 1206 felpro gasket.car went 11.50's on pump gas with no spray and pump gas,with a solid stick,and a victor jr.750 holley setup.very durable head,but they need to be ported fully if u want big hp and torque numbers.hope this helps,i'd keep em.  

I was planning on full port as someone in my area said to do.
I'm gonna run them on a 388 full forged bottom end, .200 dome pistons and with the 64cc chamber should be around 13.0-1 compression.
Thanks for the input it is greatly appreciated as I was in doubt for buying them.  

your quite welcome