I could do it on mine but the amount of time to print it would be close to 3 days, and the size woukd make the ammount of warping huge and basically make it nearly impossible to print. plus it would need to be made from abs not pla. the way to do this is using vacuum forming. you need to get ahold of one of the mud flaps, then make a negative mold, then cast the piece and get some black polypropelene sheet and vacuum form the sucker. this would take less time and then you could crank them out very quickly.
also i feel bad everytime someone asks if something can be 3d printed and i say no. if you want it to be 3d printed, think small, maybe a cup holder arm or a cap for the hitch reciever, wheel center caps even. the reason you shouldnt print anything larger than basically 8"*8"*8" is because there is some funky thermal expansion going on during the print that makes the print actually want to just curl up and rip itself apart. what needs to be done is the chamber in which you are printing needs to be heated so the plastic is soft enough to stop curling. this technic is patented by stratysys and thats why no commercial printers come with built in heated chambers. i however designed and built my own printer from scratch, it has 18" of travel in all 3 dimensions and i can heat the build chamber if i need to. the second issue is, the machine can only process 1kg of plastic in 24 hours if the extruder never stopped, however it stops frequently so this means realistically it would take 3 or mord days to print something that is large and uses one or more rolls of plastic.
anyways sorry for the rant, look into making a mold and vaccum forming it.
