Charge Cooling on a Budget – Cheap Intercooler DIY Posted on October 16, 2011 by Subachad — No Comments ↓ SAAB 900 Intercooler SAAB 900 intercooler: Can be found on eBay or a pick a part style junkyard. Tools Needed: Flathead Screwdriver, #10 wrench or socket, Drill, 2 bolts, washers and nuts, small piece of straight metal.