Naturally Aspirated
My d15z6 ek3 now is "eating" oil so im planning to change piston rings, valve seals and maybe i should try to find d16z6 head, put it on - is it a "bolt-on" and what gains?
Stock i/e mani, thinking about buying exhaust header 4-2-1 from ebay, but some sellers there say, that they wont fit...