you need a VTEC computer. the P72 will work, but it has functions you dont need unless you used a GSR head.
assuming you used a B16 head, all you really need is a PR3 ecu if you used the stock firewall harness. this ecu is OBD0, and will plug right into your stock plugs.
as for other options, you'll need a harness converter, which range from $150-250. those ecu's would be the P28, P30, and P72 (minding the note above)