Hi , well having owned a celica 92(2.2 litre 5sfte) and a 240sx 93(2.4 Ka24de),here i what i have combined for you:
Celica GT 92:
Pros:
1) Very nice comfortable ride, stable
2) Good for beginners not used to car reactions
3)Toyota cars are Very reliable cars !
4)It looks awsome
5)Affordable
Cons:
1)Not alot of aftermarket parts for ST,GT and GTS mostly parts are for Gt4(3sgte)
2)Rides performance not as good as looks
3)Expensive parts
4)If u like DIY and swaps Not many can be done on this most comon swap is (3sgte) only SWAP?
5)In place where snow exists RUST!!! on the frame rail (NOT STRUt Towers tho )
240x 1993:
Pros:
1)Great looking and Handling
2)Affordable
3)MANY aftermarket parts
4)Many swaps available (From Silvia to skyline to Supra to 350

)
5)Very Stable and Confortable ride
Cons:
1) Respond differently then a Fwd car (Snow and Rain)
2)Car interior space not really made for 4 people
3)Rust on Strut towers and frame rail very comon (snow and Rain areas)
.... TRYIN to think of some but DAM I love this CAR!!!
OK so someone correct me if they think i am wrong or wanna add any to these! Also i wanted to say that me and my pal built his celica he spent 5000$ on his car and no where was it as fast a 240sx with 5000$ spent on it!
Its just not the same car! FWD and RWD are completely different! Depends on alot of things actually its ur pick! If u wanna go with looks but dont really care abt performance id say celica cause its cheaper! but if u like mods id DEFinetly say 240sx i mean u can do anything to it

2JZ swap COME ON!!!!

hahahah U can prob do all the same mods to a 240sx u can to a Celica a for suspension and all but NOt engine! Depends on ur preference actually! They are just not the same cars!
Hope i could help ya a bit
Phil