If you are planning to get HKS Spark Plug, do get HKS Camshaft, HSK Cam gear, HKS Timing Belt, HKS Pulley Kit, HKS Crankshaft, HKS Titanium Extractor, HKS Force Induction Kit, HKS Turbine System with Intercooler, and HKS Suspension... What it does would be that when you change the camshaft, cam gear, and timing belt, plus pulley kit, what it will do is that it will push the diesel in instead of pulling out, and since you have 300 degrees camshaft, it will cycle in your engine alot faster, with the help of crankshaft, the pistons will force the diesel to get out, while the turbine, or what we call today TURBO, will FORCE the diesel out of your block, flowing through the extractor, why titanium extractor? to make sure that the diesel flows out perfectly with no leftoever behind... The suspension acts as an absorb system for your HKS system, it will absorb all your HKS system force... This is the cheapest solution for you mate, saying truth from the heart, Iam not joking around, ask around the Toyota people, they will agree to this