Is my 91 Toyota Celica GT with a 2200 4cyl and 5 speed transmission a good car to tern into a tuner ?

ok so I had a 89 Mustang GT 5.0 hatchback really good car top speed 140-150 but my brother was going through a hard time so to be a good guy I traded it to his 91 Celica GT, I really miss the Mustang but I also love this Celica, it's a 91 Celica GT with a 2200 4 cyl and a 5 speed manual transmission, (it registers 120 mph) and( X1000 rpm registers up to 8 but it's in the red at 6.5 or 7, going 55-60 it's on the 3 going 80-95 it's on the 4). so anyways I want a good fast car again so instead of buying a new car I thought I would jest tune this one up but I've never owned a Celica before so I don't know if it's a good tuner or not. so dose the 1991 Toyota Celica GT with a 2200 4cyl and a 5 speed transmission make a good fast tuner car and if so what could I expect the Horsepower and top speed too be? and how would I do this?