1991 Toyota Celica gts is it worth it?

[Rush13]

Ok i got a 91 Toyota Celica gts for about 2 mouths now its salvaged but it works good for now it got another used engine i love the car so far everything is good about it i was thinking of tricking it out but is it worth is like it has racing tires and 18 inch rims on it already other then that's its all basic i was wonder would it be a good idea in tricking out the car or save up for another one since I'm a high school student and got a part time job