Hi,My car, 2003 Nissan Patrol TB45 SWB manual with a 2006 GMC Denali 6.0 engine, is generating a lot of heat around the console/transmission area so Im thinking of getting a trans cooler. The only one I found was the Davies Craig but I dont know which size to go for and whether the transmission has the necessary plugs for a trans cooler or not. Im also considering upgrading my radiator but cant seem to find any.Which brands do you recommend? Any tips on installing?Thanks