If you put good internals in the pushrod motor you can do the same with it. Its all in the combo and what expectation you have out of it. The problem with driving the S351 daily is that some have the factory tune which isn't safe! The earlier ones have weak pistons. For myself, I could drive mine cross country and not worry about a thing. I built the motor though and upgraded the electronics to support it. With the way mine is set-up it has the in traffic manners of some of my old muscle cars. I like that so I guess it is personal preference. I could more tame if I put it back stock, but that wouldn't be alot of fun. Mine has about 14,000 mile son it right now. It has a notorious history though and some of those miles were hard miles. It has ran mid 8's in the 1/4 before I bought it. Long story on that. The 4.6 cars are technologically more advanced, but both cars have their points. It all depends on what you like. Me, being the gearhead, I love the pushrod motor. I know I have rare cars so I no longer push them too much. I have a semi-racecar for that now. If I had to go with a 4.6 car I would search for a 03/04 Saleen Cobra. To be honest I think it would be a better investment that a E model and they respond to mods great. The mods aren't very expensive either. I rode in a 03 a few months ago that would give stay close to my S351. All he had was a chip, cold air kit, lightning blower pulley, long-tube headers, and a cat-back!