Here is a nice inexpensive TB for those high-HP builds.
We also have larger sizes (74mm opening/70mm plate), but for the money these 68mm ones are tough to beat. You can even add on a new tps for only $29 when you buy the TB. Add a TB mounted map sensor too (DIY3bar, DIY4bar, Hondata 4bar, etc) for the ultimate package discount.
Check out these pages for more details: