Speaking of tunes been doing some overnight reading, and some have recommended a gt1725s or gt1446 turbo drop in with diverter and Air intake. Couple hundred pounds in parts to take it to 230hp. Full build inc map, turbo, diverter valve is around 2k apparently. Not sure if you need a BOV.
250hp is possible but at risk. I read a guy in Canada did cams taking it from a TJet
His 300hp build was a built engine costing $10,000.
230hp is more than enough in 1060kg Abarth. 5.5- 6 seconds and 13 point something more than adequate. Not to mention Torque is around 260-270ft lbs apparently. In real world terms thats nippy and just as quick as an NA tuned Mx5 possibly.
I think that would be perfect spot. Definitely interested in one of these. Leaning towards the Abarth over the Lusso. Time will tell.