No problems using a VTEC Head with nitrous, you'll actually get more out of the shot. The main thing is fuel control, I would get a adjustable fuel pressure regulator and an air/fuel ratio guage though. You can get a decent dry set-up off ebay for around $279.00, don't waste your money on a $700.00 nitrous express or NOS brand kit. Then just get a NOS brand nozzle because the cheap nozzles suck. I got the NOS brand nozzle and a 75 shot jet for $11.00 from a local domestic shop. With the VTEC Head you will get a little more HP and it's more durable than the non-VTEC head. I also recommend a window switch that deactivates the nitrous at a certain RPM so that if you over rev (mis a shift ), the nitrous is not spraying when you redline.