remove the thermostat and drill 2 x 3mm holes in the actual part that lifts.. clean off any swarf and refit .. lowers water temps nicely but its not enough to hinder the way the car runs

i had 2 x 12 inch kenlows on my old one... everyone said it wouldnt fit oh yeah and ally rad helps aswell

i remember christians attempts to cool the water down... trial and error .. have to give every thing a go...