I was messing around and decided to replace the textures for the pizza boxes.

BACKUP ORIGINAL FILES

Pizza 1 Contents

OpenIV > GTA V > x64h > levels > gta5 > props > roadside > v_rubbish.rpf

Open the .rar file and drag both .ydr files to the above directory inside of OpenIV


Pizza 2 Contents

OpenIV > GTA V > x64c.rpf > levels > gta5 > props >

(Screenshot of boxes obtained by using the map editor)


UPDATE 12/26/15:
Added Dominos pizza box texture to replace prop_pizza_box_03.ydr
Provided Papa Johns & Pizza Hut textures for v_ret_fh_pizza01.yft and v_ret_fh_pizza02.yft