As part of my ongoing project ive received these pickups. Obviously they are the older solder type rather than the more modern solderless ones EMG now seem to produce. However, how can i tell exactly what EMG pickups these are? Im assuming they are an active set (im hoping so anyway) and once my project is at the wiring stage ill probably whip it off to my local tech. Hopefully these will eventually match up with a EMG jazz bridge pup and a spector tonepump pre amp! Anyway, any thoughts on what model of EMG these may be?