The turbo heads are usually between 58-62cc.

If you're wanting to run a high compression engine, go with a N/A head as the chambers are smaller. if you want a larger combustion chamber, try some of the old oval port heads. The combustion chambers are nearly identical to the turbo heads but have the larger oval intake ports. As far as the cam is concerned, what RPM range are you looking at? The Ranger cam has good bottom end torque, but falls off at higher RPM.

Most anything that runs on unleaded gas has hardened valve seats. I think the turbo heads do have harder seats than the N/A ones do, but it still doesn't do them alot of good as they are very prone to cracking from the extra heat generated by the turbocharger.

If it is in good shape, I'd save the turbo head for someone with a turbo car. Good turbo heads are getting hard to find because of the exhaust valve seat issues.