Yes, Isuzu was the sole builder and designer of the Passport.
Isuzu
According to rockauto: HONDA PASSPORT EX (1994 - 2002) HONDA PASSPORT LX (1994 - 2002) ISUZU AMIGO (1998 - 2000) ISUZU AXIOM (2002 - 2004) ISUZU RODEO (1993 - 2004) ISUZU RODEO SPORT (2001 - 2003) ISUZU TROOPER (1998 - 2002) ISUZU TROOPER LS (1992 - 1997) ISUZU TROOPER LTD 1997 ISUZU TROOPER RS (1993 - 1995) ISUZU TROOPER S (1992 - 1997) ISUZU TROOPER SE 1996 ISUZU VEHICROSS (1999 - 2001) TOYOTA T100 (1993 - 1998) TOYOTA T100 DLX 1995 TOYOTA T100 DLX EXC 1995 TOYOTA T100 ONE-TON 1993 TOYOTA T100 ONE-TON DLX 1995 TOYOTA T100 SR5 (1993 - 1997)
A 1993 Honda xr100r would have a four stroke engine.
code 34 honda civic
yes
Yes
Yes, it is.
Yes!
not without major modifications
F22B
The 1993 engine will not fit directly into the 1986 frame without modification due to a 1992 change in frame geometry and mounting positions.