its VTEC not VTECH....

if you can change a timing belt you can do it.

1) H23 block---remove the oil orfice on the block (by the knock sensor)
2) Replace anything that the H23 timing belt touches with H22 timing
component gear
3) Run H22 head gasket, waterpump
4) put it together....

here is a more indeth...

http://www.honda-tech.com/zerothread?id=510617