isn't that very cheap for both back box and sportscat? Seems like there is normally almost 300 £ for just a sportscat. Maybe others have experience with Toyosport?

My exhaust bushes was kind of sloppy after a while so changed them into focus rs mk2 ones. Then the exhaust is not so loose anymore.

I got a milltek manifold on mine also. think the exhaust manifold is the most restrictive part of the original exhaust. But then it would be quite more expensive and harder to fit.