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4dp Hi All, I have a 1992 4DP ,which is basically standard. I also have some 4DP-11 cylinders which I bought some time back as 'spares',the question is would there be any benefitnegative. PRDCML12-4DP

4dp group, Hi All, I have a 1992 4DP ,which is basically standard. I also have some 4DP-11 cylinders which I bought some time back as 'spares',the question is would there be any benefitnegative.