I had mine off the road due for two years and couldnt take it to get mot'd in those two years due to unforseen circumstances...but iv got all other mots.

i spent money on parts whilst it was sornd, to do the same things as youve done....(little washers, header tank, even new 16" rims which i knew i wouldnt be using for some time..

People buy on condition aswell as mileage mate, so i wouldnt worry bout it at all, if youve taken the time to improve your car then it shows u aint messing people about...

i reckon i could sell mine in its condition with no mots or service history (but i wouldnt, u get wot im saying tho)