2wd to 4wd question about torque converter and flywheel

[pitbull4x4]

Can I use the 2wd ones or do I need to get 4wd ones

[Eagle]

The flywheel and torque converter don't affect 2WD or 4WD. You need a transmission from a 4WD so the output shaft and housing can mate up the the 4WD transfer case.

[pitbull4x4]

Ok thank you. Didn't know if I could use the same ones in my 2wd for 4wd swap