Any Volvo T5 with minor mods for 300hp: stealth, excellent at passing, good mpg off boost and under budget.
I have a 92 passat wagon syncro with a 1.8t swap and upgraded turbo setup. At 15psi it should be around 290whp (based on the same setup in another car) and it averages around 28mpg. With a little more fine tuning i hope to crest the 30mpg mark soon.
I bought the car with the motor and turbo setup and removed the factory 1.8t chipped setup that ran like poo and swapped MS2 on. I finished the swap last october and have put almost 15k on the car since. Drive it everyday, rain or shine, snow, sleet you name it, its seen it this winter