It seems a nice car to be sure. Im currently saving for an Escort Cossie and have been for about 8 months. Im not in a posistion yet to buy, however from a potential buyers point of views I have a few things that I might find off putting, but then again I am quite particular. Please take my comments as constructive as your car looks immaculate and very cared for.

Suggestion 1. Cosmetics
M3 Mirrors, to me personally I can't stand them. I think you would fair better if you replaced them with the original big turbo mirrors, or even small turbo mirrors. It's a marmite thing, it might be those that put some people off.

Wheels, some people might not like them, some might, would limit your options. I think maybe if you sold them and replaced with original Escort Cosworth rims or more mainstream aftermarket rims (Engels, SuperTs etc)it would be more appealing to a wider audience, and those looking for a factory-ish car.

Suggestion 2. ICE
I personally love ICE, and the kit you have sounds very reasonable. But when people start reading about big ICE installs etc, amps they can get horrors of hacked about wiring and bodged installs. Im not once implying yours is, but when I look at a car, it's something that always crosses my mind. Take the amps out, sign up to www.talkaudio.co.uk and sell them. Get some money back. You would get quite a bit from the kit. ICE is down to taste, it's not just about the kit, 90% of a good ice install is in the installation.

Also with the ICE, people think they are paying extra for the car because of the ICE. Again if people don't like ICE they might pass your car over because they don't want to pay a premium for something they will only remove afterwards.

Suggestion 3. Badges
My biggest pet hate is incorrect badges/spacing on the back of cars. Sure they look great, but people looking for originality might think hmmm. I sometimes onder why they badges have been replaced? Re-sprayed or new tail-gate? - Again not implying anything about your car, but these are thoughts people would think.

I hope you can take these suggestions as helpful advice, I was in the same situation with my MK6 RS2000, I removed lots of aftermarket items, made back over £1000 and sold the car for £300 less than my original asking price.

I personally like your car alot, and if I had the money I would be paying you a visit to check it out. Sadly i don't yet

I can see you need to sell your car, so I would try and make it available to the biggest audience you can.

Best of luck.