GTV handling

[sye68]

My 96 gtv twinspark with 64,000 miles seems a bit soggy to me mainly on long sweeping bends,i get a bit of body roll and twitchy movements from the car,maybe i,m just going to fast and am up to the limit of the car,I,ve had a MR2 b4 which has about the same power and that felt far more flatter and neutral around long fast bends.
Any suggestions on what to change ie bushes,shocks etc and is it worth going to non alfa shocks,springs etc for even better then standard handling without shaking my teeth out .
Cheers Simon
Ps
Why does the 147 2.0 have a slower 0-60 time on paper then the GTV when it is about a 100 kilos lighter??