Lanty is correct about the pesky bracket needed to mount the small bucket military sealed light housing on the front of a M715. The M37, M35, M151, M38A1, Gama Goat and I don't know what all else used the same small bucket lights front and rear. They were all replaced by the big bucket lights found on M35A2's and HMMWV's. Look at my avatar and you can see the M715, tan M35 Gasser in the back and all USMC green M35 Gasser in the middle all have the same front marker/blinker/black out lights on them.
A lot of people including myself for a few months years ago have put the newer bigger light buckets on the M715 for better visibility to other drivers. Then, I started collecting all the small bucket housings I could to make a good set. I probably have 15-20 bad housing sitting around in a box that are useless because of stripped threads, broken stainless bolts in the aluminum and such. But, I got 3 good sets out of my trouble along with another pair of good rears on my car hauler trailer. New might be worth your time if you can't find good used.
He is also correct about making a pie plate looking thing to bolt in and hold a civi light of some kind.