All Kaiser Deluxe series automobiles for 1949 and 1950 model years (K492 and K502 series on the door post serial number tags) have the dual-manifold 226 engine, with a carter 2 barrel carb. All Kaiser Special series automobiles for 1949 and 1950 model years (K491 and K501 series on the door post serial number tags) came with the 1 barrel carb 100 bhp version of the 226 (the deluxe version was rated at 112 bhp).
Refer to the appropriate sections of KFOCI HANDBOOK Version 4.0 (the CD that went out in 2009-2010) for more information on engine set-ups.