Most people find that the stock-style late-model shifter sticks are too much of a "reach" when a T5 is swapped into an early model car. I did a little research a while back and found these
alternatives from Hurst:
5380015 - 8" up, 3" back, chrome steel, 3/8-16 thread
5380100 - 10" up, 4.75" back, chrome steel, 3/8-16 thread
5380178 - 8" up, 3" back, natural aluminum, 7/16-20 thread (GT350Clone)
5380179 - 10" up, 5.5" back, natural aluminum, 7/16-20 thread
5380201 - 9.5" up, 5.7" back, black aluminum, 7/16-20 thread
5384106 - 10" up, 5.5" back, chrome, 3/8-16 thread
5386643 - 7.5" up, 9.5" back, chrome, 3/8-16 thread
5387436 - 10" up, 5" back, chrome, 3/8-16 thread
5388009 - 10.5" up, 3" back, chrome, 3/8-16 thread
(Drawings & additional listings are on the
Hurst link above)
I swapped in the 5380178 stick. Worked about perfect for me - 5th is a full arm's length, without bending/reaching, yet the shifter is far enough forward that I won't spill my Big Gulp in 4th gear. I stuck with an aluminum stick, since I already had a nice shifter ball with 7/16-20 threads. All the aluminum sticks are 7/16-20, while the steel are 3/8-16. The 5384106 stick is VERY popular for early cars with T5's also.
These looked like the best fits. I think most people will want 8" - 10" in height, and 3" - 7" of curve back. Hope this info helps!
Here's a pic of the 0178 stick in first gear: