this fan bolted right into my 1982 4x4
http://store.summitracing.com/partd...5&N=700+115&autoview=sku

i also ordered 2 of these thermo switches and installed them in the intake manifold in the 2 holes just to the right of the thermostat.
http://store.summitracing.com/partd...0&N=700+115&autoview=sku

if one fails the other one will continue cycling the fan.