hmmm.....I wonder if you could replace the V6's front bumber assembly with that of a V8's....
that alone would make the cars almost identical....save for what's under the hood...
although I doubt the dimensions for the bumper assembly would be the same in both models....
and with the inclusion of aftermarket body kits/engine upgrades, the V6 could theoretically become as bad a$$ as you want it to be.
a little food for thought