Agreed with jimbo on this one, if I had the immediate funds available I'd be converting to LPG. At this moment when fuel prices are at a high I'm glad I have my 120. Not bad at all on fuel. LPG will be something I'll look at when I finish uni, as I intend to keep my car until she's dead and gone, so I'll get my moneys worth.
Perhaps it would make sense to put up for sale Tim, depending on condition, I'd say go for £3500 asking price if it's in okay nick, then go for a mark 1 diesel, look for one for like £2000, or if funds are really bad, I was going to go for a Rover 45 diesel, spend about a grand - £1500. You're saving a couple of grand, and obviously fuel, tax and insurance costs. Obviously you're not going to have such power, but that's what I would do. Or go for an old banger
or walk, or buy a motorbike.
But don't listen to me, do what you think is best!