Engine replacement in 89

[Lincv8]

I'm 90% convinced to replace my 112k mile 305 original engine in my 89.

Probably going to put in an ATK 350ci 290 HP.

They have the engine fully dressed or long block. Fully dressed includes carb that is NOT injected like my original so  needing to remove the ECM.

Opinions ! on removing ECM or just getting the long block and putting my Carb and distributer on new engine..

Thoughts appreciated. Its a winter project.

Edited 1 hour ago by Lincv8