A step by step definition of Cummins engines
B245: B-series, 245 bhp
C211: C-series, 211 bhp
C245: C-series, 245 bhp
L10H: L-series, 10-litre, horizontally mounted
LT10: L-series, 10-litre, transversely mounted
M11-305: M-series, 11-litre, 305 bhp
I have no idea the difference between a B, C, L and M series
engine. 
The Setanta bodywork was originally designed for the Irish market.
IMO, they're ugly. Most, if not all, of the ex-SBS B57 had been
retired. The good news is that one or two of these beauties had
been acquired for preservation.