Even one of the old 96-98 GTs are better than a V6. With some new heads it will run pretty hard.
Right now me and my uncles are building up a 98 GT with tons of mods, almost too long to list. Procharged, H/C package, Tokico and Steeda suspension parts, and more. We are hoping for at least 350rwhp but I think it will blow up eventually even with a good tune.