Here it is the link to the previous posts of this project:
https://armorama.kitmaker.net/forums/21639&page=1
As was said I dicided to use the T23 Turret and leave the project of the M4A1 75mm big hatches for the future.
This is how my M4A1 is today, it´s an Italeri and it´s OOB. Critics will be welcome.

Nice looking work. I do not see any texture in the sandbags. Are they Milliput? If so, did you press them against a piece of gauze to get that fabric look? Also, there are no rear mounted unit designation decals shown. If you put them on the the rear just place them in the opposite order of the front ones. That is to say, place the division on the left and the vehicle number on the right rear. Are the tracks OOB?
thanks
DJ

Hi 210cav:
The tracks are vynil but not from the Italeri kit. The sand bags are made witt epoxy putty a+b. They have texture, I pressed them with gauze and this leave a well defined texture. Maybe the photographs with too much light in that part doesn´t let it to be seen. Still I didn´t place the decals, just the ones of the transmition cover. Next steps will be painting and placing pioneer tools, future coating, decaling, future coating again, oil washes (a lot) , mate coat, drybrushing, airbrushing weathering (dust), etc...