So you have a single cam and you want v-tec. The CVT Multimatic ( continious variable ) transmission comes in the 2001 or newer Civic RS, and can even outpreform a 5MT . The engine in the 01' Civic RS is a D15B 1.5L SOHC non v-tec. The transmission preforms better but, a v-tec engine would out preform a single cam. Since you have a D-series engine you can most definately do a CVT swap. You could swap in a JDM D15B 1.5L v-tec ( D15Y8) engine or a K20A 2.0L v-tec but v-tec would be kinda hard to do with a CVT transmission.