Take your vice mounts and fasten them together using SS M8x25. Ensure the nut welded on the side of the top mount is closest to the 6 holes on the back of the bottom mount. Undo the nut on the end of the vice handle and apply loctite. 

Do the nut on the handle back up. Punch into the handle x4 times like so to ensure the nut does not come off. Clean it up with a grinding disc. Take your vice and fasten it to the sliding mount using x2 SS M10x50 with nylocs. Ensure the vice is straight before fastening the bolts. 

Using x2 SS M8x30's, spring & flat washers and loctite, fasten the back of your vice mount to the tray like so. These fasten to the M8 rinvuts that re in the chassis.

Place x2 SS M8x30, spring & flat washers and nylocs, in to the two holes at the front of the mount. Tighten the bolts. Slide your vice in and fasten a SS M8x16 with a nyloc to the back of the sliding mount like so. 

Take the clamp lever and cut about 10mm  off of it. Clean it up with a grinding disc and fasten it to the nut on the side of the top mount. Ensure all bolts are tight and your vice mount is now complete.