Well after reading through all this im kinda curious about attempting something like this myself. It seems like it would be fairly straight forward. What type of compression do these cars have stock? I think it would be pretty simple to set up a remote turbo at the back of the Y-pipe and just kinda build a turbo so that it spools up fast.

1997 Mercury Mystique -Tinted, Debadged, and no more door ding guards -Dual Exhaust With Magnaflow Mufflers -Gutted Precats -SVT rear sway bar w/ES bushings