The difference between the BD11 and the BD11A is the bearings and the belt. They just used better ones, still the same size, so they will work. The BD10 had a tensioner on the belt which broke all the time.
This blower is EASY to rebuild. If you've broken a belt, just take the blower off the car, remove the pulley and the allen bolts that hold the front cover on. Then pry the front cover off. Do it evenly though. The front bearing seats in the front cover.
Then use a small gear puller to remove the bearing and the gear.
It's the reverse for installation. If you are handy with a wrench it will be easy.
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1988 Mustang GT
stock bottom 302, C4
10.9 @ 128 with 8 psi of Novi 1000 boost!----STOLEN
1989 Mustang notchback
Warmed up 306 with a Procharger.
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