How can I run a cat like a lion?
How can I run a six banger like an 8 pack.
Unless he means by upgrading the parts (being that it is large for a V-6, 4.3L is a good size) you can have enough horses as a V8. The Nissan GT-R (R35) and Ford Taurus SHO, both have twin-turbo V6s, and run like V8s, although the GT-R is more of a monster with 450hp than the SHO's 360hp.
Tuning cars, driving cars, reading Road and Track like a maniac for 5 years and playing too much Gran Turismo.