differant clutch slaves for M5OD?

[Jon Boy]

i have a new one for my 93 4.0 4wd, but the 91 3.0 2wd needs a new clutch slave. parts store says they're differant (and $10-15 cheaper for the 3.0).

if they are basicly the same tranny then what's the deal? overall length? i figure the shafts are the same. only the distance from the tranny to the clutch is probibly differant. and if so could i maybe just get away with just swapping in the old spring on the new slave?

 

[Jon Boy]

ok called the same parts store today (autozone) and now they said they don't carry the clutch slave anymore not right. so i went there and had them look it up. well, what do you know, they carry them and have one in stock ($86). dumbasses.
now a few weeks ago they told me that the 93 4.0 and 91 3.0 clutch slaves were differant, but now they're saying it's the same part. i really don't like the idea of pulling the 4.0 tranny to possibly find out that they are differant.

anybody got 2cts of opinion?