The twins are unreal! I shouldn't say too much now because I don't have that many miles on them yet. But what a rush! I started with a TST # 5 plate, That Plate alone made me say to myself I'm Hooked I WANT IT ALL. So I set a HP Goal @aprox 600 HP and went for it! POR Twins, Pump, studs,DTT, meth. I know it sounds like a lot of money but if you read this form and listen to guys like Jim Fulmer and many others that have been through it you can save lots of money! Thanks Everyone for all your posts. Like nike says JUST DO IT. I have to say there has been only one problem and thats the lower Turbo oil drain tube. Going into the side of the oil pan, if for some reason you don't get the drain tube welded correct, your screwed. I have a nice leaking oil pan which I'll probably have to change out, and from what I understand thats not fun.