After you get the flange off look and see if the piece of bolt is sticking up out of the turbo housing or if it is recessed inside. If recessed, the easy out is the way to go. IF it's sticking up you have some options.

Former owner of '99 CSVT - Silver #222/2760 356/334 wHP/TQ at 10psi on pump gas! See My Mods '05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red '06 Mazda5 Touring, 5spd,MTX, Black