hello, I am going to get a CRC 3.1.

The seller said that it has a a broken Axle, and most likey the left hub ( opposite hub from the spur gear). I found a deal for a used rc12L3 axle to replace the broken one on the CRC 3.1. But I need a Left Hub still, and I am not sure if the rc12l4 left hub will fit with the rc12l3's axle. Any ways, will this combination work? ive heard that the L3 axle is not good and i should just get the big D style.