Removing 2 piece driveshaft from 1968 Chevy C10 2wd

[HeavyHauler]

I am wanting to replace the U-joints and center support bearing on my 1968 Chevy C10 2wd shortbed. It is a original 396 with turbo 400 and it has the 2 piece driveshaft.

I have already removed the driveshaft which connects to the rear differential but now I am wondering how remove the center support bearing and get the front driveshaft to slide out of the transmission?

Here is a pic of the center support bearing and the splined shaft that is coming through it as I am wondering how do I go about removing them so i can take the shafts to a driveline shop to have the joints replaced.