I imported the vehicle into a 3D editor (Wings 3D) and aligned it to match an F-Zero machine. I had to remove a few parts – mostly under the ship – to fit F-Zero’s filesize limit. Samus’s head model comes from Smash 64, which I aligned with an F-Zero head.
Selecting Grand Prix with other imported vehicles nearly always crashes, it seems to have to do with the cpu’s. I’ll try to lower the polygons and texture quality.
Place both folders in your root folder.
Do not change colors yet, it will crash the game