you should note that the Bovington Locust is actually a US vehicle painted in British 6AARR markings so don't be confused by the presents of head light guards and smaller tow lugs, these are not British Locust features. Cheers
The Brit version has larger tow shackles, front and rear to aid in tying it down in the glider.This was missed when the kit was first released , parts have now been added and I believe there is new box art coming to reflect that . See review on PMMS
Jeff I believe they are smoke dischargers. I have noted that the one at Bovington Tank Museum and the one pictured in this thread have brush guards for the lights but period pictures do not show this feature.