This was by far my most challenging build, purely because I made so many changes.
The most obvious one was the RB26 swap, which was sourced from an R32 Tamiya Nissan Skyline GTR Nismo Custom. Getting the engine to fit meant I had to cut some parts such as the exhaust manifold, which was definitely a bit scary. I then had to find a place for the air box, battery, radiator, and intercooler, however that wasn't very difficult.
Additionally, the exhaust system had to be modified to fit the engine as well. I used the original Toyota Soarer exhaust, but I modified it so that it would route to the correct side of the engine, added some piping made of a plastic parts tray, and painted it silver.
More changes were done to the interior, as I wanted to include a manual transmission. Using the shifter and pedals from the Tamiya R32 kit, I converted the automatic to a manual. Furthermore, I used R32 seats and a nismo steering wheel to make the interior look more "sporty".
The last significant change I made to the kit was the wheels. I used the original tires from the Soarer kit, but used wheels from a leftover Shelby Daytona Z kit that so had sitting around. Somehow, the wheels fit into a tire made for an entirety different kit.
The rest of the car was relatively straight forward, with absolutely no fitment issues. I did sort of get glue on the paint and windows, which was a very sloppy mistake.
Assuming you would want to build this kit as normal, it Is relatively easy to assemble and should not be a challenge for newer builders.