I want to rebuild my old z6 and have some question about the process. The engine has 154000 miles. Honestly i'm not looking for big power but a fresh and reliable engine . 1- Is it absolutely necessary to bore and hone the cylinders? 2- Can i use this ebay rebuilt kit ? http://cgi.ebay.com/ebaymotors/Mast...ItemQQcategoryZ33620QQitemZ160075076891QQrdZ1 ? 3- What is absolutely necessary to do or change? Thanks.