Big mother fucker ones To be honest, anything.. If inlet pipe is on the left use a JZ rubber hose.. If inlet is on the right, take water neck off the engine, cut it, and get a lip welded on so hose doesn't pop off.. Obviously you need the rad outlet to be on the right hand side of the car so it can join up with the engine, but think all SR/RB rads have outlet on the right anyway.. Iv used various different rad and fan setups in conversions Iv done, you're pretty limited on width in s-bodies unless you cut stuff off, so if you don't have one and looking to buy a new one, get the thickest one you can find.. Also look at the size of the inlet/outlet as SR size is smaller than JZ size, won't make much difference if you've got proper fans/cowling though, just be aware you may need reducers.. I cut the original inlet/outlet pipes off the rad and weld new bigger pipes on.. When end it comes to fans, you can use the viscous but make sure you make a cowling fit really well.. Seal up any gaps and make it draw all the air through the rad.. If electric, you're tight on space if you're using stock rad possision, I have squeezed a pair of Aristo/GS300 fans into an s14 1j, they move so much air it's unreal.. OEM fans will always be better quality and move more air than cheap aftermarket fans, but they are bulky..
