According to my information:
The winged sumps were used on Isuzu 4BD1RB and 4BD1RB01 engines supplied to JLA (Jaguar Land Rover Australia). From 1986 Isuzu supplied 4BD1RBG and 4BD1TRBG engines that had wingless sumps.
The part number for the winged sump for both the 4BD1RB and 4BD1RB01 is 511360-5090.
The wingless sump for the 4BD1RBG is 894466-3610, and for the 4BD1TRBG is 894149-2471.
Now compare the wingless sump part number I looked up as 894466-3610 to the sticker in the pic of the wingless sump that Isuzurover posted above, and see that it is written differently in 2 places on the sticker. I'm just saying this as you may need to try similar variations for the winged sump number I have given.
http://img440.imageshack.us/img440/8936/02062009134.jpg

