DSM t25 oil drain flange $5
 

This will fit on the g16, SOME 14b, (not all, didn't fit mine) and all dsm t25 turbos. $5 plus probably like $2 for shipping. All you need is a 3/8 drain to screw into it which you can pick up form your local Hardware store for cheap.
http://img113.echo.cx/img113/7738/dsc24337vx.th.jpg