Flywheels

[Tonner]

I pulled a 350 V8 out of a 4-speed standard 1-ton and want to put it in my Longhorn. The flywheel is waaay thicker than the one that was on the original block from the Longhorn. Both are 350s, but the Longhorn has an automatic. Will the torque converter bolt up to the thicker flywheel? Will the bell housing still mate with the block? If everything fits, which flywheel would you go with? Both are in good shape.

Thanks.