I have an Alfa 156 which has been developed over the past couple of years (in fact it is the second car - first one was written off). It's a 1.8TS but I have added a turbo and intercooler (Garrett T25) and upgraded springs to some progressive rated Eibachs. The brakes have been done too. It has Brembo 4 pots and Red Dot grooved discs and Brembo fast road pads (which are crap compared with DS2500s). Finished off with the nice 17" rims from the GTA and clear side repeaters. Looks very nice and with 200 brake and thumping amounts of torque it goes OK too.
Then I have my track car. It's a Golf Mk11 GTi 16V but has a professionally built race spec engine with forged pistons, ARP Rod bolts, balanced crank, baffled sump and windage tray. It's running 285 duration cams that have good lift. It also has a gas flowed head and solid lifter conversion. CDA airbox and Ashley exhaust system with Miltek manifold. Emerald ECU and electronic ignition has also replaced the old k-jet. It features a Quaiffe ATB LSD mated to a gearbox with a significantly lower final drive. It tops out at about 125mph but gets there quick. It's stripped and caged, FIA approved seats, Adjustable rear anti-roll bar, Spax coilover kit and dampers, strut braces lower and upper at the front and upper at rear.Also with 7x15s and yoko AO48Rs and perspex windows.
It makes the Alfa seem slow and is putting out approximately 190bhp and revs to 8500 rpm. Only weighs 900kgs.
But then if I want something really fast I get on my Suzuki GSX600R. That makes both cars seem absolutely pedestrian. Still almost standard but does have and IXIL can and K&N and had it dynod at 102bhp.