C2160 Yf120 Reconstruction

For the people of Y Country, they had their own reasons. Although the J58 was a cross-era engine with a cyclical design, however, this kind of engine was produced in the 1960s after all. It was now in the late 1980s. Twenty years had passed, and the once advanced engine had already fallen behind. This was also one of the reasons why they were able to produce it.

Of course