These should be very, very easy to install with the motor in the car, though - just pull the turbo off and set it to the side and it should take you anywhere from 15 minutes to 12 hours depending on how bad your other studs are
I am running a t25 from an sr20 and I know with the stock studs that BEGI sent me it was extremely hard to get the turbo on with the engine in the car. I had to cut at least one of the studs slightly shorter to get it all to go. So knowing my luck it would be the 12 hours to get them on with the engine in the car. So I was hoping to avoid that if possible because I am lazy. Maybe I will jsut push back the engine build for a little bit longer.
Heh. Don't know how long BEGi's studs are, but these are long enough for a turbo flange, a nut, and a thread showing beyond that - and that's it. You will have no trouble installing/removing the turbo with everything in the car.