848 head was the most used head for those years, it don't matter,either one will work for you,do the one with less work to do.,make sure that they have the water sending unit that you need, there's a big and small one, 848 has the big one, i don't know about the 887 head.
http://s1055.photobucket.com/user/baldybenny/library/ 1936 1.5 wrecker,1937 gmc coe,1939 Chevrolet coe,1942 4x4 coe, 1942 coe,1946 dump,1947 2 ton dump,another 1947 2 ton dump,1950 coe,1967 c30,1937 cat 22,1936 Chevrolet 5 window foremans coupe, 1914 ford speedster.
