Welcome to the forum
I can't really recommend a clutch for the SVT there are threads about it. Check out the SVT section I think there is a sticky thread over there about it. I do know that the cheapest clutch kit that I could find was the Luk kit at Partsgeek.com. It's 338 bucks shipped which is a fantastic deal for a clutch kit for the SVT and it's a stock replacement (Luk is the OEM clutch).