Prototype

Those "wings" are part of the 8x4 chassis sadly. But if you're looking for a single player mod, yeah maybe Forerunner can do it.

Theres a video on youtube but its on ats not ets2 but its basically the same. In the video he shows how to remove it on a kenworth and makes it into a attachment, accessory thing. Which if u do it correctly it would work on the large chassis, but you can place that into a folder within the mod folder, so it would be like *renault_magnum_2009* <== for an example. Seems confusing but it ain't. I couldn't find the video for you but I reply once I find it

for SP, its easily do-able. but for MP, it is sadly not possible unless SCS makes it possible.