The 9 bolts and 10 bolts take the same size UJoint.
I had the 10, threw a 9 in there and the shaft bolted right up.
Compare the new shaft joint to your old shaft joint. I'll bet there is some sort of conversion joint in that new 1LE shaft you have.
To my knowledge the stock joints in a 3rd gen (and 4th) are the Saginaw 3R joint. Check this out:
http://www.pstds.com/driveshafts_101.htm I just checked that diagram again and it is mistaken. The 3R joint is measured by Dim A on diagram A. My yoke is 2.5625 inside to inside, not 2.625 (2 5/8")!!
DANA Spricer# Description
5-3022X______ 1310/3R Combo U-Joint
5-3147X______ K3147 3R U-Joint **stock