Danny
you would be very suprised how many modded rs500"s still have the correct engine fitted
Most do as the 500 engine has the best block money can buy ( as im sure you know ) so why would you change the engine when the best is sat in there already
As you said about yours , them that have been changed have been due to engines blowing .
The origonal rs500 engine with its correct number to match the chassie number makes a big differance to the cars value
Ash who ownes them 500"s is a great lad and is a true petrol head who collects many types of cars and isnt bothered if they sell or not
Paul
Ps, my big power 500 has a gen rs500 engine fitted