LTX blocks have mirrored sides or are they different?

[Takid455]

Those that have done the LT1 /4 swap, are the engine mounts different lengths or mirrored of each other? With the engine centered in the car/ frame, the driver's mount will be 3/4" shorter than the pass side per my current mock up. It'll work, just want to be sure. Started with a pair of Dirty dingo mounts which are mainly scrap metal. Car is a 77 bird. Frame measures near perfect. my relative measurements of engine to frame and engine to body suggest otherwise. When engine is centered w/in the mounts, its 3/8 - 1/2" to the pass side of center of the frame.