They wont go in upside down .
Sorry .
Hurumph . Generally you set the ring gap , center rear . Just as an aside .
IF its a NEW Ring , it needs checking its got say 5 thou gap , set square in liner using the piston skirt .
A drop of oil worked into the RING GROOVE is not a bad idea , prior to assembling .
Usually you fit the Ring & piston in the liner , hanging down SO THE WRIST PIN HOLE is just clear ,
Warm the case , Slide the liner part down ( Con rod already in - chamfer in Big end to front . ) ,
Maybe test dowel through the caboodle , then carefully push in the oiled wrist pin , just flush ,
THEN seat the liner fully home . Just in case someones wondering .