d16a6 afaik is not a VTEC motor. a z6 head will fit, a d16y8 head will fit and flow a bit better than a z6 one. (y8 = 96-99ish). As far as the computer, it depends on where you get one. Parts store/dealership they'll probably start around $300 lol. Check the flea market section here and see if anyone is parting out a crx or EF civic.