I been looking into swapping out this d15b2 but I was woundering if I could take a vtec head and swap it. Is it possible what all would I need and is it worth it???

 

I think its possible man. I did a y8 head on a d15b8. It was pretty straight forward. I struggled with wiring the MPFI though. Also I forgot to add vtec oil jet the first time, vtec will not engage with out.
And just wondering if your 90 is a hatch or sedan?