Here are the LIMs (SVT & Stock) side by side. Both are same. Also, the injectors are 19lb on all Oz Cougars built in 2000. Not sure about 99 models.
I cleaned these under kerosene bath with brush, then washed in hot water garni and futher cleaned with solvent and rags. Took lot of time and effort but its worth.
If anyone happen to get LIM gaskets replaced make sure that gaskets are lined up properly. Lot of gaskets, (actually most of them) are made to suit non-svt LIMs. So, they don't line up with SVT LIMs.
No dramas with normal LIMs if they don't line up but with big LIMs it actually reduce power by restricting smooth air flow.
The reason they don't line up by default is because of locating pins. Solution for this is to snap off locating pins and line up gasket manually.
Its a bit hard to line up LIM with gasket and engine block without locating pins. With a bit of patience it can be done. Just insist your mechanic on this and make sure that gaskets and LIM are lined up. Otherwise the whole idea of bigger LIM is a waste.