I'm pretty sure the ear pieces on the ROTJ were narrower. Of course the obvious difference is the edges of the suit having that extra trim. Also, was'nt the ab plate plain white in ROTJ? Another small difference is the grey areas on the helmet I think were a different shade of grey, and the black lines on the cheeks are different as well. Oh, and are'nt the shoulder straps made differently as well? I know they started using stickers for the tube stripes and grey areas too(ear pieces were hand painted).