Keeping it close to stock, not bone stock, just close has nothing to do with satisfying the next owner. I just think these cars are better (and more valuable) in a near stock configuration, ie boltons only. The OP has a very nice stock example, I certainly wouldn't convert it into some frankenturbo, just warm it up a bit.
If you really want to go fast, buy my 600hp stage 2 997tt, it's fs
