No change in the clutch linkage is necessary. Keep your stock clutch linkage and everything inside the bellhousing except for the clutch disc. You will need a 14 spline disc from either an Astrovan or S-10.
The only modification needed (besides the driveshaft and shifter hole) is to shorten the input shaft pilot and bearing retainer on the T-5. If you want to pay for this adapter plate, you won't even have to modify the transmission.
http://hamiltonintakes.com/products/s10t-5-adapter.html
Ray