Rover owners: Someone please tell me what to do with this bloody car!

Had this car for nearly three years now, was a very bad example from the start and had major bodywork done on it since due to bumper damage and scuffing along with over £2000 to put it right. In total I've spent in excess of £4000 on this car as I believed in it & still do.

As a ZT-T owner it is now purely just a weekend toy, trouble is I just cannot decide what to do with it.

Gone through a MOT last week, no advisories whatsoever.

All classic mods fitted and been on the dyno recently at 158bhp & 282ftlb torque, pulls really well. Second gearbox due to a slight whine in the first one two years ago. Stage one map, SDi's, modded filter box, straight 70mm pipe, EGR etc, etc. Condition wise it's nothing short of mint now as hardly used.

Now for the bad bit... up until March it was used as a Scotland - Cumbria shuttle therefore the milage is... erm... high for a 2005 facelift at 144,000

What's it realistically worth to our professional members on here? Realistically I think it's probably worth more to me. Had an offer last week which I will mention later. Just canny decide if it's worth keeping.