Looking for some guidance on my 72 short bed

[carshop]

I just bought a 72 C10 short bed with big hopes and dreams and have read a ton of the current posts just looking for insight for a newer C10 owner with not all the tricks up my sleeve.

I don't care about a/c and I am looking to somehow eliminate the evap core box all together and saw the blower motor is housed in that same assembly. any ideas or place that may make a cover plate. I own a shop so my way is to remove it and put a block off plate but our winters are iffy and kinda want the heat if possible seen some of the custom clean outs done and I have a few good ideas on ways to hide all my harness and all and i have built 2 channels along frame to run harnesses in but this big bulky box and the stupid components in it I want gone and want it clean.
took core out expansion harness and line condensor receiver the whole system is gone and i just dont see a way to remove this thing without cutting this box to keep bloer housing or remove entire thing and hope i can make something.

a/c elimination