Help me identify this Carvin bass

I recently picked up this bass relatively cheap with a broken trussrod I intend to replace. It was listed as a carvin LB75 when I bought it, but I am not convinced that's what it is or if it was made by carvin at all. All electronics and hardware are carvin, but the body is a bolt on painted like a neck thru.

Hard to see in the pics, but it looks like a 2 piece body with a maple neck and ebony fretboard. Most similar to a B5 from what I can tell, but it does not have holes drilled through for the strings and I *think* the battery compartment is slightly different. It could be custom, or it could be a replica, or it could be a model I haven't discovered yet. Seems to be from the 90's based on when the seller bought it used.

I'm not sure what the pickups are yet because I haven't pulled them, but the preamp is a 30-05053 Rev A board.

 

Ah! I had no idea that was even a thing - but looking at this:
The Carvin Museum - BK4 Kit Player's Gallery

I bet you're right

 

Cool - in that case I shall feel no shame in refinishing and rebuilding it

 

Very nice! I think this one can come down to wood only too, since I feel its sort of awkward being painted in the style of the LB