does anyone know of any reliable website that sell jdm or usdm legit gsr complete swaps for a decent price i live out on the east coast so im not lookin for a private seller... i have a 99 civic coupe that i wanna put it in, theres a 2000 si swap in there now, so what motor and year should i get? please let me know i need this swap SOON

 

http://www.hmotorsonline.com (West coast though)
http://www.importautosalvage.com (East coast)
or https://honda-tech.com/zeroforum?id=10

I'd get a GSR swap...i believe your car is obd2...so get an obd2 swap/conversion...i'd do a search on the motors.

EDIT:

others are:
http://www.jdmshit.com
http://www.jaydm.com
http://www.sohfast.com
and so many more...