The standard set up is 445cc or 74mm air gap of 10 weight oil.
I think the free length of the rvf fork is maybe a couple of mm shorter than the nsr and the offset is about the same.
I think the clearance problem Hermit had is more down to the head, barrell spark plug combination than the fork offset. I'm told this can happen on a standard nsr with the rear/front head conversion if a standard plug is used.
The RVF yolks are wider set and will foul the rad cap so you need to reduce the steering lock.
Definetely worth playing with oil heights and weight and even softer springs though before you go for a revalve. I wonder how much of the improvement people feel after a revalve is as much down to the fact the forks/shock just needed a service and oil change in the first place?