I found this RSR exhaust on modacar.com but it says it's for the 7th gen ceilca GT-S and i a have GT.

Do you guys think it will still fit my car ? Thanx for ur opinion's

RS-R Exhausts GT2 for Toyota Celica The ultimate in exhaust performance is the RS-R GT2 series.
This RS-R GT-2 exhaust system line is specifically designed to omit useless bends to provide the straightest exhaust pipe route possible.
Also redesigned for this exhaust system is a unique slip fit design, giving this RS-R GT2 exhaust the look and performance of true racecars.
The RS-R exhaust GT2 system will provide significant gains in power for your modified import vehicle.