Yep the GTV 2.0TS has the most wonderful cornering I've ever experenced.
This is why as a successor to the GTV2.0 I chose the Brera 2.2 over the 2.4 and 3.2, and I'm glad I did - the others are just too nose heavy after the purity of a GTV2.0. The 2.2 has great balance too, though the suspension is softer, which I'm actually liking - the GTV has getting a bit too firm, especially after I'd moved back to London with all it's pot holes and speed bumps.
My suggestion to you (and you might hate it) is to pick another 2.0GTV in great condition and do a choice few mods, you should be able to get it close to 200bhp, especially if you choose the phase 2/CF2 engine which started at 155 bhp. If you get to, say 185 bhp in a GTV twinnie, that is going to feel like plenty. Only thing is neither the twinnie, nor apparently the V6 3.0, delivered that much torque at low revs, so perhaps consider a phase 3 with 2.0JTS and mod that - more low down torque available on the JTS engines.
I would suggest: bespoke induction (readily available and cheap), stainless steel cat-back exhaust system (consider a Vortex centre silencer to boost torque and power), and custom remap from Red Dot, AHM or similar. That ought to get you near or past 185 bhp.
Operation Alfa has done a lot of work on his 147 2.0 twinnie, ask him.
Brat Pack no.8