Originally Posted by the0ne
its was bought at an auction...
That explains it.
Originally Posted by the0ne
cause i got vtec and all that...
The B16A head looks identical except for the normal upturned intake manifold, while the B18C has a dual stage inverted manifold. They are not interchangeable. Besides that, above the exhaust manifold, the B18C head will have "P72" cast into it, while the B16A will have "PR3" cast in.
Originally Posted by the0ne
is it possible they slapped a gs-r head on a different block?
B-series DOHC VTEC heads are interchangeable.