My RS200's engine is knocking and so needs replacement. I am looking at several cars on salvage auction sites. I have a choice of a straight forward engine swap or a R26 car. I am using the car as an all round vehicle, but not a full time daily. It will see the track, but not as a track day car in that I want to blast round for hour on end, however I am also an instructor so is an ideal car for private tuition. Having talked to a couple of people in the industry they have cautioned me that the turbo units can "melt" if over stretched. I am not looking to go beyond what Renault did with the car originally, so "stock" is fine, what ever that is. The reason for considering this is that the original car felt down on power, the top end feeling asthmatic, it did need remapping, I know that, but it did not survive long enough to get there. The turbo engine seems a tempting solution. What would you do?