Just found some chassis codes for the 8th gens. The coupes are FGs and the sedans are FAs.
FG1126E - Civic DX Coupe - Manual
FG1226E - Civic DX Coupe - Automatic
FG1136E - Civic Coupe DX-G - Manual
FG1236E - Civic Coupe DX-G - Automatic
FG1166E - Civic Coupe LX - Manual
FG1266E - Civic Coupe LX - Automatic
FG1186J - Civic Coupe EX - Manual
FG1286J - Civic Coupe EX - Automatic
FG2156J - Civic Coupe Si - Manual
FA1526E - Civic Sedan DX - Manual
FA166E - Civic Sedan DX - Automatic
FA1536E - Civic Sedan DX-G - Manual
FA1636E - Civic Sedan DX-G - Automatic
FA1556E - Civic Sedan LX - Manual
FA1656E - Civic Sedan LX - Automatic
FA1586J - Civic Sedan EX - Manual
FA1686J - Civic Sedan EX - Automatic
FA3626E - Civic Hybrid - CVT
So, here it is broken down some more for you...
The first section:
FG1 coupe (DX, DX-G, LX, EX)
FG2 coupe (Si)
FA1 sedan (DX, DX-G, LX, EX)
FA3 sedan (Hybrid)
Second section:
1, 5 manual trans
2 auto tranny
6 auto tranny, CVT
Third section:
26E DX, DX-G sedan, Hybrid (sedan)
36E DX-G coupe
56E LX sedan
56J Si (coupe)
66E LX coupe
86J EX
FG1126E - Civic DX Coupe - Manual
FG1226E - Civic DX Coupe - Automatic
FG1136E - Civic Coupe DX-G - Manual
FG1236E - Civic Coupe DX-G - Automatic
FG1166E - Civic Coupe LX - Manual
FG1266E - Civic Coupe LX - Automatic
FG1186J - Civic Coupe EX - Manual
FG1286J - Civic Coupe EX - Automatic
FG2156J - Civic Coupe Si - Manual
FA1526E - Civic Sedan DX - Manual
FA166E - Civic Sedan DX - Automatic
FA1536E - Civic Sedan DX-G - Manual
FA1636E - Civic Sedan DX-G - Automatic
FA1556E - Civic Sedan LX - Manual
FA1656E - Civic Sedan LX - Automatic
FA1586J - Civic Sedan EX - Manual
FA1686J - Civic Sedan EX - Automatic
FA3626E - Civic Hybrid - CVT
So, here it is broken down some more for you...
The first section:
FG1 coupe (DX, DX-G, LX, EX)
FG2 coupe (Si)
FA1 sedan (DX, DX-G, LX, EX)
FA3 sedan (Hybrid)
Second section:
1, 5 manual trans
2 auto tranny
6 auto tranny, CVT
Third section:
26E DX, DX-G sedan, Hybrid (sedan)
36E DX-G coupe
56E LX sedan
56J Si (coupe)
66E LX coupe
86J EX