Morris Minor Owners Club

Just picked up real cheap (for 10 USD) a Lucas LRA100 from what the fella selling thought came of a Mini. I'm in Oregon, USA.
Does anyone know the ACR number and if suitable for the Moggy-948 cc 1961? The ACR number lets me get to output wire sizes etc based on Minor Matters article.
My sockets also don't seem to fit the 3 bolt heads at the back?
Thanks.
Trevor

any chance of a pic? I would guess it is a ACR 15,16 or 17, in which case it will be fine for a mog. Also I dont think you can distinguish between them on the outside (can anyone correct me?), it is down to the windings on the inside.

on decent/modern Alternators the capacity is stamped on the nameplate or on the casing - not sure about Lucas ones though.