If it had been a slightly larger sum, I'd be tempted to try to find another classic car to restore, I enjoy the challenge in this.
you are a pensioner and I think needs nothing about big in finance or any assets , and life is shorter than what we expected , so let us enjoy every moment in things that makes us smile and happy.
and taking a little amount from your pocket aside from this winning will not hurt you in anyway .
but of course this is just my 2 cents as like you , I am now enjoying life as being Diabetic makes me feels like my time is going shorter each day.