bleeding without using bleeder :)

89 ax15 internal slave
Bleeder screw is seized up, no chance it will loosen, has anyone bled a system adequately enough to function using other methods?

If i have to replace slave id go 4wd and new clutch qnd all that
Have new Hyd line and mc waiting to Install

Thanks

Edit: derp, nm. Yours is internal, my method was for external.

Yeah, i did read the mustang guys put rubber stoppers on the top of mc's, drill small hole for a steel line then vacuum pump to 20 psi and hold for a min, they swear by it so I guess its worth a shot