I added pics to my gallery showing 4 spd trans, early 5 spd and a late 5 spd along with shifters.
jmortensen sent me a couple of his pics I have included.
I put a 4 spd shifter in a late 5 spd on the bench. The shifter would go in when in neutral, but if it was in gear the pin would not line up. After I put it in while in neutral I could shift but, the shifter would hit the top of the shift rod cut out. You can see the mark on the truck shifter pic jmortensen supplied. My 4 spd shifter had the same mark but not as pronounced since i only had it in to check how it shifts.
I plan on doing the mod technicalninja has discussed with the late 5 spd. Lengthening the bottom portion of a shifter the same amount I drill the new pivot hole higher.
my gallery for trans pics and shifters.
http://album.hybridz.org/showgallery.php?cat=500&ppuser=8318