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When I built mine I used the left and right motor mount brackets that speedsource sells as well as the mk1.5 conversion stainless clutch line and my reasoning with that was I couldn't build brackets as nice as the speedsource ones and as for the clutch hose I could of had one built here but it would of cost me double what speedsource sells theres at. As for everything else I cut the old mounts out and cleaned the frame rails hoisted the 3s in through the bottom of the car minus turbo and header and lifted it about 3" higher then the hubs and hand bolted on the mount brackets and lowered the assembly till the mount brackets were sitting on the rails and used a floor jack and a block of wood to jack the engine up to get the tilt to it then reposistened it so the center of the output shafts from the tranny were approximetly center with the hubs and tack welded the mounts on then I rechecked dropped the engine out and solid welded them in place and remounted the engine and built front and rear motor mounts and installed the halfshafts. As for shifter cables I bent the one shifter bracket slightly in(the one that reposistions the fork not the one that engages gears) and used my stock cables. I made a pipe that is insulated and runs across the firewall for the water inlet and the heater hoses I just ran 5/8's heater hose to and the water outlet was a straight connection I actually ended up reusing all the mk 1 hoses just had to cut one because of the pipe on the firewall and then instead of the mk2 or mk1 water filler I used a pressure tank from a VR6 volkswagon. For the wiring I got rid of the mk2 fuse relay box and used the mk1 and used a ecm pinout for a mk2 plus wiring diagram and the wiring diagram for the mk1(the best way I found to do electrical is sit down and map everything out on paper first) then I spliced the wiring together minus the fuel pump resistor and checked everything for correct placement with a multimeter(make sure everything is correct and covered, preferably soldered and heat shrinked before connecting the ecm and battery so you don't fry the ecm). The intercooler piping and placement is entirely up to personal preference, the first time around I did a huge trunk mounted intercooler with a T3/T4 turbo but now I'm running a custom water to air setup with a GT3082R. All in all it took me about three weeks to build mine and the only help I had was a buddy of mine welded my brackets solid for me and also this was the first engine swap I've ever done, so good luck and have fun
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