Hi Nick. The car sounds a treat on the film so you must have made a good job on that DIY silencer! It looks like its nipping along at a good speed too. My original coil overs were very rusty and were void of all damping! Living quite near to Hagons the motorcycle wheels and shocks specialists in Hainault, I took my old ones in to them and they made me replacements by matching up the spring tensions, well in fact they made them a tad harder for the same reasons you mentioned. I had to spacer the eye width out a little but they went on fine, I cant say how good they will be yet as its a long way from being on the road [ask Jonathan, he knows why] They keep a record of all the one off shocks they make for future reference so they have these on record if you want to go that route. They also said if I wanted them tweeking they would change the coils for another tension no problem. Its a lovely little car you have there, cant you mask up the inside and spray the dash blue? I will come over to your rally one day when I can afford it! Best wishes, Bob