It was originally intended to be identical to it apart from the more powerful engine and its use of the longer , interchangeable , outer wing panels .
Construction of the ITS - 8W began at the same time as that of the ITS - 8 .
ITS - 8W was originally intended to be identical to ITS - 8W apart from the more powerful engine and ITS - 8W 's use of the longer , interchangeable , outer wing panels .
Construction of the ITS - 8W began at the same time as that of the ITS - 8 .