Our most popular build is the DSM 4G63; which comes in multiple setups.  Pricing is the same for both 6 and 7 bolt engines.   We do not offer core exchanges, and will rebuild your supplied engine core for the build.  We can do flange and thrust washers blocks, along with 1G / 2G cylinder head conversions.   We also can convert 6 Bolt Rods for "22mm" Pin Pistons (2G or Evo 8/9).   Lastly, we can offer help with 6 Bolt Swap Builds, if parts are supplied.   With different block , stroke, and rod length options, there are many ways to get creative with this popular platform. All Links are for 6 Bolt 4g63.