Try these websites for information:
http://www.inlinepages.com/drivetrain/manualswap.html
http://www.fordmuscle.com/archives/2000/09/t5swap/
http://www.fordmuscle.com/archives/2000/09/t5swap/index2.shtml
I started out with an 88 Mustang 4 cyl T5 and used the following parts:
--stock bellhousing, clutch linkage, pressure plate.
--67 6 cyl Mustang throwout bearing.
--88 4 cyl Mustang clutch (it fit the I6 flywheel).
--V8 yoke and front U-joint (required welding on bigger V8 front yoke to driveshaft). Had the driveshaft shortened a bit and balanced when the front yoke was installed.
--Special roller bearing pilot bushing.
--Adapter plate I got from amartin on the forum. This source has since dried up, but you can probably get one from one of the companies that sell the swap kits.
--Stock rear x-over that I modified to fit the T-5.
--88 Mustang rear mount.
--Stock T-5 shifter.
Probably left something out, but that's the gist of it. Be sure to have the flywheel turned before you install all of the above. Not a bad swap at all once all the parts are rounded up.
Hope this is helpful. Good Luck!