For you say anything I've done the search of done four searches and after getting to the 20th page I give up . My plan is to use a D15B7 and put the Max peating rod rods which are higher at 134.5 mm which is only at half a millimeter larger than stock rods. Along with this I plan for a z6 head and y8 gasket with I standard vitaras (I think like -15 dish) . With using the compression calculator and with the few things I've Found some people say it should be a 6.99to 1 cr. Which obviously is too low. BUT if you use a vitara with 30mm comp height instead of the 28.5 it moves you too 7.84 to 1. So the problem is this if my math is right then I'm already coming out of the block at tdc and still have only a 7.84 static cr?? I dont want a valve to slap a piston but also want enough compression to damn start it. The calculator seems off but any help would be appreciated.