the blatas don't use a cross flow type radiator
so it should be bottom tank outlet on the left hand side of bike to pump inlet
top hose should come from the dome to the top right tank on the radiator
& the top left radiator outlet should be to the coolant bottle
i think this is correct
here is a link to the genuine blata manual i uploaded to a host server it should help with that & many other things
it also shows you the missing pump shimms that they dont put in the replica engines
>> http://gallery.oldholden.com/d/168033-1/origami_B1.pdf <<