Should I sell my car to get a different one?

I own a 1985 Pontiac Fiero SE. (not my daily driver) It has 123, xxx miles and the engine and clutch are going out. The body is in good shape and needs minor work. I have an engine lined up to be put in ( haven't purchased it yet) it is a 3800 S/C from a Pontiac GTP. I bought the car for $400 and the engine, harness, and k-frame for the new engine would be $600. I want to know if I should go ahead and buy the engine and start the swap or buy a different car and work on that instead. The different car would be a 1984 Ford Mustang SVO Turbo. The car has 121, xxx miles. It has been slightly modified and has ~400hp, The car is being sold for $2,500 and is in excellent condition. Both cars are a 5-spd. Is buying the mustang a good choice or should I stick with the mid-engine fiero?

Your current car is very undesirable. Practically no one wants it. Anything would be an improvement.

The FIERO was called automotive junk food by CAR and DRIVE when it came out after testing it and comparing it to a VW GTI! It really is NOT worth very much, and is a rattle trap, BAD with gas, and has a lousy suspension as well! I like the 2.8 liter engine better than the 3.8 but that is just ME! The 2.8 is VERY CAPABLE and shows what Gm can do if it WANTS to by bringing a totally new engine into production, instead of slicing of cylinders off their old beat up BUICK and CHEVY push rod engines! THe FIERO has a dismal interior and NO real ERGONOMICS at all! The MUSTANG is a much better car to play with and more rewarding! Nearly All ford engines have more power capabilities as they are not using the SAME OLD engines over and over again, like the 3.8 engine with it. VERTICAL two valve cylinder head that does NOT breathe all that well. It took gm FOUR TRIES to get the 3.8 to balance right, and the original 3800 engine had ridiculously BAD oil pumps and ignition systems as well. It shows off how GM releases things BEFORE they are ready for public consumption. FORGET the FIERO! Everyone else already has NO PARTS will be available, and the NEW TURBO FORD 2.3 liter engine is AWESOME and will fit, with LOTS of money involved! GM people are So very blind, it seams! The FIERO will not have room for the 3.8 as far as I know, but you could TURBOCHARGE the 2.8 with a bit of success. This car has BAD balance, TORQUE Steer and LOUSY imprecise handling as well! IT. Only saving grace is the plastic body which is ALSO a rattle trap!

I would get the mustang

I ended up buying the mustang, thank you guys for your input. The car has 403.5 rwhp and 385.6 ft/lb

Dwferfe