Granted you've got the US bumpers and catalyst exhaust along with the York compressor and mount - that's probably pushing 200 lbs right there but outside of that what exactly are you comparing this to? The 1990 NSX was just over 3000 lbs and a 1980 fiberglass bodied Corvette was over 3300 lbs. The ultimate for lightness in a non Lotus mass produced car at the time was probably the 911 with a frameless unibody, air cooled engine and torsion bar suspension at around 2400 lbs. You can't compare any of them to todays plastic facia covered stamped steel lego blocks or exotic alloy and carbon fiber constructions. Furthermore the 308 was a street car, not a race car so saying it is "absurdly heavy" is a misconception. Also, do a little research. There is a lengthy thread on here that has gone on for years, concerning probably the first electrification project on a 308. It is however something that I think is obviously way, way out of your budget zone.