hello and welcome!
as andy has said above rear part of sills and just inside(floor) of the sills at the front tend to be bad points for these.
i recommend if the outside looks ok then take the interior rear panels out by the sides of the rear seat ,remove the plastic infills and shine a torch in there ,any sigh of rust in there should be stopped asap as these rot from this inside...even just throwing some fresh engine oil in there will help stop it.
another place to check is remove the front wheels, then remove the black plastic inners ,now look into the wing towards the doors and u will see another black foam infill...remove that and clear any crud outta there...it causes the bottoms of the wings to rot.
subframes especially the rear one can look very scabby but be ok, best way to test it is give it a knock about with a pin hammer, do this after your mot tho
if any holes appear then its goosed, if not get some rust remover on it and then rustproof it, its best to remove it to do this BUT u can put years of life back on it just by giving it a good coat of waxoil or your prefered rust inhibitor whilst in situ...(bilthamber is another good one).
as for the imrc, if it works well then id leave it alone BUT they do suffer from the heat from the engine so many on here including me will tell u to remove it and shove it under the battery tray away from the heat.
if u fancy a bit more power then there are some options with this imrc, ive completely removed my secondary's that it controls, this will reduce a tiny bit of low rev torque but 2500rpm up will give u a nice amount of power.
the easiest way to do this is to just lock them in the open position.
DO NOT remove the imrc box unit tho, you can cut the cable but the unit has a switch in it that activates at 25k and tells the ecu to put slightly more fuel in... so leave it plugged in.
one more thing...
most of the stuff (subframes and suspension) off a mk2 mondeo will fit these cars including the larger intake setup that the v6 st200 has....a quick and great way to improve your car.
if u look in the projects section most of us have done this work there with detailed pictures (mine is called now i have 2)
also the howto section is great if your having any issues(including key fobs).
anyway ive done my usual and rambled on enough

when u get it ,put some pictures up! we love to see em no matter how scabby they may be, we'll often look at these and say do this do that to help out.
enjoy what is becoming a rare classic


