Just adding a data point on weight.
Nizam you have a weired light weight milano. My verde without me without spare, clean trunk, clean glove compartment, still weighted 2960 on Steve Hamilton's 4 corner scales if I remember it right. I do have shankle streets torsion bar and springs and front bar .. maybe they are havier?
On the street with me, and my average goodies, spare, 1 bottle of spare oil, cable, duck tape etc, about 3280 or so, and that number was obtained almost a decade ago when I was 20lb lighter...
(hint hint! a nother way to reduce the weight!)
Back to 164 racing, i think the UK article sez the stripped down 164 weights about 2600 lb... but don't take my words for it.
I think it was Carl's 164 that did extremely well at ARA's autox a while back. The advantage of torquey FWD pulled the car thru very tight turn when us the milanos had to slow down to turn.
Jess