[MJN]

If you currently have a T5 then the G-Force box is probably your best bet, you can retain your clutch, bellhousing and driveshaft so it will be more economical and straight forward to install. The T5 is also lighter than the TKO. I've read all the stuff on the new G-Force box but it hasn't been out long enough to see if it really is as tough as they say it is. The TKOII however has a definite track record and is a very tough box but you will have to get a new bell housing, clutch and may have to mod the driveshaft with a new front yoke.