I am using the aluminium 360 pump with the passenger side inlet like the one pictured on your motor , 18" fan with a spacer , it fits about an inch or so behind the rad , just enough to get a gear wrench between the fan blades to take the fan off when needed .I can't remove the bolts one by one tho I have to loosen them all and lift the fan straight up with the bolts still through the spacer . I have an OE shroud that I bought here on FABO before I switched to the Champion but I haven't ever gotten around to making the brackets to use it with the new rad .
