Yes its probably easier than a 8v.
Depends what lump you end up with, it might be a really good one like your 8v, and push out alot more than 150bhp as standard.
Interestingly when the golf magazine tested OBDII vr6's a few years back, they all were putting out near on 190bhp with no mods. I do believe this does happen.
Some people on here doubted about the vr's when i posted that before, its interesting how some people claim that a 16v can be easily increased as its detuned in the first place, but not a vr.
Normally 16v owners that claim this.
The reality is the vr is more detuned than a 16v, probably because once tuned it becomes even more damn thirsty....
The ABF was already well tuned for its time, the 9A and 6A lumps only put out 136bhp...