Howdy guy's, First tme on this forum and it looks like you guy's have an idea whats going on! So heres my questions: 1: I have a 76' fj55 2f and my old man and i have just pulled it apart for a rebuild, its .040 thou over size, do you know by how much this might increase power? 2: The pistons have 4 rings, are these 3f pistons? Because 2f pistons only have three rings? Cheers and thanks in advance!!