post some of the usefull numbers off the bellhousing flat that is on the same side as the starter.
ps.. 5000 are 4 cyl. 4000 are 3 cyl.
i see 4 lines on the simms injector pump.
i also see the olderlouvered
68 and back tin.
if the block has screw in core plugs vs regular knock outs.. it is a 233ci engine.. and near the lower hp quoted. if it has the knock out plugs.. it's a 256ci engine and 70hp.
nice looking.
i LOVE my 5000