The toyota boxes are fairly readily available over here, also plenty of adapter kits to mate up other boxes
It wont be road registered, just going to be a track day warrior

Hence the 296mm 4-pot front skyline brakes
Im gonna stick with the skyline hubs as I know a guy who is building a Skyline Sport sedan so I have a steady supply of knowledge and stuff to mate Double wishbone arms to the skyline hubs/ball joints.
And ill prob just use a live rear axle from a 2wd hilux and run a 4 link rear end to keep it simpler, was thinking of using the Diff and rear hubs from the skyline for the rear end but a R200 diff is a little overkill for 150-170hp and 700kgs
