I used a large turbo standard intercooler with charge cooler and pace charge cooler kit for my small turbo ggr 300 bhp conversion and it worked a treat low temps no retard so very good then changed to radtec 500 cooler slimline fans etc to keep aircon but very tight fit but had to as now runin roller t4 and autronics for proper power. Have all the old intercooler and pace charge cooler kit etc in shed if you want to pm me