Gauging Interest and Valuation

I am looking to sell my beloved MR2 but not until January 2013 as this is when my current insurance policy expires and I am not able to swap cars over due to my broker terms and conditions. But in the mean time I will be getting the rear arches fully remade with the proper repair panels.

Car specifications:-

1989 Toyota MR2
MOT Feb 2013
TAX Feb 2013
180,000 miles on chassis (approx 29k) on Reconditioned API engine
Fidanza Lightened Flywheel
Uprated Corolla T-Sport Clutch Kit
Koni Suspension Overhaul in May 2008
Celica GT4 Twin Pot Caliper Upgrade April 2012 - red stuff pads
HEL Yellow S/S Braided Brake Hoses all round
Full Janspeed S/S Exhaust System
Refurbished MK3 Roadster Alloys - Yoko Parada Spec 2 195/50/15 on rear
- Uniroyal Rainsport 2 195/50/15 on front
Rare Raybrigg Clear Headlights
Supercharger Rear Light Conversion
Boot Installed Blitz SUS Induction Filter
Refurbished Cam Covers
Superflex Front & Rear Anti-Roll Bar Bushes
Radiator 6 Months old
Windscreen 9 Months old
Remanufactured Front Bumper Bar
Kenwood W707 D-Mask CD/RADIO/MP3 Player

Immaculate Rear Wheel Arches
Will have it Dynoed in the summer

I can estimate that the engine will have covered a further 14000 miles when it comes to selling up.

Any ideas?