Need to remove crossmember?

[68jimmy]

Hello All,

My 68 gmc has the original 351 V6/manual 3-speed, which will be replaced shortly by a 350V8/TH350 setup. Right now there is a cross-member that supports the rear of the motor since the 3-speed just hangs in the air from the engine.
I do have the correct cross-member for the auto ready to install. My question is, do I need to remove this other cross-member prior to installing my V8/auto-trans setup?

Thanks!