Yeah-the bell housing is a lot heavier duty then expected.

I actually bought 2 flywheels. I bought the aluminum Mopar flywheel first and then came across the steel flywheel for $100 so I bought it too. turns out Hays actually made both the aluminum flywheel and the steel flywheel for Mopar Performance. They are both 130 tooth.
The aluminum flywheel is 14 pounds and the steel is about 37 pounds. I WAS leaning towards the steel flywheel since this build will mostly be a cruiser/commuter.