i can get a roof cut out for my 95 4dr integra from the junkyard but im just wondering how hard it is to replace the roof (as in drill the spotwelds out and remove the old one and weld in the new one). the reason i want to do this is because mine didnt come with a sunroof and i want a factory one.

 

it's pretty straight forward if you know how to weld. if you don't, this wouldn't be the time to learn. they're just regular spot welds like anywhere else on the car. you're gonna have to remove the front and back windshields to remove the roof and all of the upper interior to get the headliner out.