Not exactly. Very similar, but different enough that they don't interchange*. The Z3 rear suspension parts DO interchange with the ti, but they're just as expensive as the regular compact suspension pieces.
*You can, however, use E36 compact/Z3 rear suspension parts to convert an E30 rear to five lug wheels.
Quotes to live by:
guessing gets expensive
nothing is more expensive than a cheap BMW
buying a ratty example (of a BMW) is a parasitic relationship.(and you ain't the mosquito)
Ken Kanne, Silverhill, AL, E36 Forum Mod/Craigslist addict/Hoarder of all sorts of stuff
1995 318is "Bebe"; 1993 325is "Elvira"; 1985 635CSi "Katja"; 1984 633CSi "Sylvia"; 1987 325is "Odette"