OK, lemme get this straight. You don't want to spend more for the gas and the insurance that a V8 would be, but you are willing to invest $6k+ in your V6 (which is roughly what it is worth if it is in nice shape)? That makes no sense at all.
If you have the $$ to blow that you won't ever get back, and want to do it just to prove it, now that's a good reason. IF I had $4k to blow, I might even put a procharger on mine, as I love the Procharger that is on my 2010.
But to save $$ on gas and insurance if you had a V8, no, that's not a reason to do it.
2004 40th Anniversary V6, 95,000 miles. Redfire.
Sold the 509hp 2010 with crazy mods oni 9/22
~Going to miss it~
Check it out at dream mustang .com !
I drive Fords, I sell MBZ. Go figure...