nope. All b20 variants are non-vtec from the factory. The only difference is that 97-98 motors have an 8.8:1 compression ratio while the 99+ motors have a 9.6:1 compression ratio and a revised intake manifold.

the b20vtec you've heard of is a motor peiced together with the B20 shortblock and a vtec cylinder head. This motor is not made by honda... its a custom-built motor common to civic/integra enthusiasts because it makes pretty good power. There is no reason you couldn't build a motor like this for your crv, however.

The second generation crv DOES have i-vtec, but it isn't the comprehensive i-vtec system found on cars like the rsx-s, but rather a simplified version with variable valve timing only on the intake side (like the 7th gen civic si)...

It is possible, much like the b20vtec, to mate a k24 crv shortblock to a K20A cylinder head, making a boat-load of power.

I know a fair amount about both setups, but particularly the B20 version (I'm building one for my car right now h: ). Feel free to ask whatever you want about either.