Hmmm, Standard ish I'd probs go for the ABF. However mate has just had a VR built:
2.9vr
Lightned fly
Knife edge crank
pistons
cam
headwork
custom manifold, miltek pipe.
rev limit raised
plus box rebuild with diff.
not been on a RR yet, but should be fun! Sounds Immense, and charger to come later.
Depends what you like I guess.