Room for a Clutch-Fan in a '65?

A similar clutch-fan thread is running. The Hayden 2947 is marketed for tuners needing space, about 2.7" thick. $52 at rockauto. A 1980's M-B diesel clutch fan is ~2.3" thick w/ its thin nylon fan. It bolts to a Mopar water pump snout and I recall the same pilot hole diameter. A junkyard pick. Some new clutch-fans for those are ~0.25" thicker since a coiled thermal spring in front instead of the flat spring. Rodders have long used an older Jaguar clutch-fan for clearance (google on H.A.M.B. site).