I believe HotHallett got those lights from Extreme Trailers.
Let me know what you end up doing to your trailer. I'm thinking about lowering my trailer some too, and moving the axles back a little as well. I think, at one time, my trailer was originally a V-drive trailer. There isn't a cut out in the back for a V-drive, but the way the boat sits, and where the axle location is, it has me thinking that's what it was intended for. It isn't the original trailer for the boat that's for sure.
HBjet