10" or 10.5" flywheel

[Mustang5L5]

I just took a peek at the flywheel i had sitting for my AOD-to-T5 conversion in my '88 and just noticed the part number on it was an E1xx- part number. That's a 1981 part number isn't it?

When did ford switch to the 10.5" flywheel? '86?

That means i need a completely different flywheel???

ARGH!!!!!!!!

[Mustang5L5]

Ok, i just took a look at the part numbers

The large more pronounced one is RF-E1ZR-6380-A2A

But i missed a smaller one off on the side that reads E6ZR-xxxx-AA

SO that means this flywheel i have is an 86-later unit and will work fine with the 10.5" clutch i have?