Still slowly learning here mate :-) Google & Harrop sites are now confusing me :-( Screenshot from the Harrop video:
image-1055672428.jpg
"Large Intercooler Core" mentioned/written. Would that be a so called "Air 2 Air" (Intercooler) or an "Air 2 Water" (Aftercooler) squeezed under them wicked Eaton screws their site says:
https://www.harrop.com.au/shop/autom.../superchargers