Get yourself a Look at air.ini File or get the Skinfolder dump Tool, use search here onboard,
then you will see, you can have both, JCats Zeros and the other Model, in air.ini first comes the regular,
2nd row of A6M Mod entries are JCats Models.
regular Model (Canopy right Side):
A5M4 air.A5M4 2 ja01 DESERT
A6M2-K air.A6M2_K 2 NOINFO ja01 DESERT
A6M2 air.A6M2 2 ja01 DESERT
A6M2-21 air.A6M2_21 2 NOINFO ja01 DESERT
A6M3 air.A6M3 2 NOINFO ja01 DESERT
A6M5 air.A6M5 2 NOINFO ja01 DESERT
A6M5a air.A6M5A 2 ja01 DESERT
A6M5b air.A6M5B 2 NOINFO ja01 DESERT
A6M5c air.A6M5C 2 NOINFO ja01 DESERT
A6M7_Model62 air.A6M7_62 2 NOINFO ja01 DESERT
A6M7_Model63 air.A6M7_63 2 NOINFO ja01 DESERT
JCat (Rudder right side):
A6M-11 air.A6M_11 2 ja01 DESERT
A6M-21 air.A6M_21 2 ja01 DESERT
A6M-21RFM air.A6M_21RFM 2 ja01 DESERT
A6M-21Late air.A6M_21Late 2 ja01 DESERT
A6M-21LateRFM air.A6M_21LateRFM 2 ja01 DESERT
A6M-21LateFM air.A6M_21LateFM 2 ja01 DESERT
A6M-32 air.A6M_32 2 ja01 DESERT
A6M-32RFM air.A6M_32RFM 2 ja01 DESERT
A6M-32FM air.A6M_32FM 2 ja01 DESERT
A6M-22 air.A6M_22 2 ja01 DESERT
A6M-22RFM air.A6M_22RFM 2 ja01 DESERT
A6M-22-Ko air.A6M_22ko 2 ja01 DESERT
A6M-22-KoRFM air.A6M_22koRFM 2 ja01 DESERT
A6M-22Kai air.A6M_22Kai 2 ja01 DESERT
A6M-52Early air.A6M_52Early 2 ja01 DESERT
A6M-52 air.A6M_52 2 ü ja01 DESERT
A6M-52-Ko air.A6M_52ko 2 ja01 DESERT
A6M-52-Otsu air.A6M_52otsu 2 ja01 DESERT
A6M-52-Hei air.A6M_52hei 2 ü ja01 DESERT
A6M-52NF air.A6M_52NF 2 ja01 DESERT
A6M-62 air.A6M_62 2 ü ja01 DESERT
A6M-63 air.A6M_63 2 ü ja01 DESERT
A6M-54 air.A6M_54 2 ü ja01 DESERT
The rest is nifty fiddling here