I traded my 96' Mustang GT for my 99' GTP
180 sounds doable, but I don't know why someone would put that kind of money into a low-end Honda like that if they don't have all sorts of money to blow on various projects like they're playing Gran Turismo in real life.
No, thats 1/4. A 180hp CRX has a power to weight ratio of 180/2100=.0857. A modded GTP lets say makes 240hp. 240/3500= .0686. Its simple physics. That Civic would beat a lot of cars.
Easily. Honda swaps are crazy easy. Hell just swapping a B18C from an Integra Type R will put it around 160 whp with no other mods. Throw some mods at it like cams, header, etc and its easily at 180whp.