Yep, I'm pretty sure you could put a good h/c/i on like previously mentioned and have one helluva car. Or it you want more power, why not just bore and stroke the 351 to a 408 then. In my opinion you should just start out with rebuilding the 351 and seeing how you like it. Is there a reason why you want you're car turbo'd? And the T5 is not going to last very long behind a 351, unless its has astro gears.