[edman87]

Unless you are really fond of your 6, it would not be economical to spend more than $500 on it, since a v8 replacement can be had starting around that price.
I personnaly am a v8 man, but I do find it interesting when a old six is slicked up enough to surpass a stock or mild v8. Only problem is, for the same money and effort, you could have a really mean smallblock or 2.