No, there isn't, because we the GSX replacement jetways are only meant to be used with default airports, to replace the default Asobo model, so they (must) use the same exact dimensions as the original ones, just with a better looking models.
In addition to that, jetway replacement is not made like in GSX Level 2, because there we used SODE, which completely replaced the default jetway system, allowing to create jetways on the fly. In MSFS, there's nothing like that, so we use the standard jetway system, and replace the default ones on default airports by using a set of pre-made .BGL which contains only jetways and exclude the default ones, since in MSFS is not possible ( it wasn't possible even in FSX or P3D, without SODE ) to create a jetway on the fly.
