I have converted a regular 4-bolt strat block heel to something similar to Fender's Jeff Beck heel, where the corner of the block is rounded out. That is a relatively safe thing to do and really improves upper fret access, though not as good as an
AANJ.
I agree with nickcoumbe -- Your comments about making a new heel closer to the trem and moving the trem closer to the neck suggest that you don't understand the basic rules about scale length. You can't move either of those around without altering the scale length (nut to saddles = 25-1/2" on a strat) and wrecking the guitar.
Bert