So I just looked up all the engines every one has mentioned and I'm leaning more torwards the 2004 cobra and 2004 gt. I looked into the mark8 but I cant find many valid sources with info on just how dependable that engine is. And yeah I know the easiest swap would be another 1998 but i want something newer. I guess you can say I'm going more for dependability than anything else. I just cant make up my mind .2004 gt engines go for 3k with tranny, about 40k miles and warranty. And cobras go for about 9k also with tranny around 40k miles and warranty. The dohc withba supercharger sounds nice though.... def worth the extra cash.