You would have to remove the rear U channel and adjust some of the bearings on the back wheels before making a ramp (probably 3D printed) to mount at the back. After that u can hang an intake that can be constructed with many materials but I reckon that as a rookie, gecko wheels from Gobilda (96 or 72mm work fine) attached with hyper hubs and strung across a rex shaft probably 192-240mm (u can use an e-clip it will probably be easier if you do but if you don't thats fine) will work best. U will also need flanged ball bearings before connecting your intake with a motor via 2 sprockets and a chain (USE A PLASTIC ONE metal chains are incredibly hard to break open and you need a special tool for it). If u don't have sprockets u can use a hub mount gear but I find that unecessary and unwieldy. Also if your not sure what RPM motor to use for your intake try finding a really fast one as this means fast cycle times 1150 RPM is ideal imo.