u will notice alot of power but you are DEFINITELY going to have to get some new mods for it..
to make decent power your gonna have to can the GT40 heads, get a 255lph pmp at least, get a different cam (go custom), i would also get a least a 75mm MAF (i would go 80), and a 70mm TB, minimum of 30# injectors, gonna prolly have to step down to 1.6 RRs, get an ignition system, and you will probably need a better flowing intake, but im not very familar with TF.
good luck