Hi, I haven't been on here for a while, but I will put my 2 cents in. I have a period correct Sch k RS1600, 100% correct. Due to organisers letting non compliant cars run in Classic Car racing I retired it. In no way does T & C allow an escort to run a YB cosworth engine let alone an alloy block and EFI. Actually when you read T&C it has to have same number of forward gears as standard, escort only ever had 4 speed standard, 5speed was homologated so sould only be for a sch k car ,so running my 4 speed BDG car at 10,200 rpm against 5 speed YB cars I was a whisker annoyed. That's why I built my Zakspeed replica car. I figured if anything goes I will do the same. I am currently rebuilding my correct car. I will run it when other similar cars are running other than that I will run my hotrod with the other hotrods.I was strange when I turned up with it it was the people with hotrods that complained. I had the sequential gearbox before this project and decided to use it as it was obvious you didn't have to run the correct gearbox. I know my gearbox isn't right but either is running a 5 speed toyota in an escort if you want to stick to the rules. I see Ray mentioned my car wouldn't be eligible to the gearbox, I guess my mistake was being open, as an escort has been running in Arrow/Taccoc meetings for over a year with 6 speed seq gearbox, I guess he forgot to mention it. I am currently fitting 5 speed ZF to zak car, hopefully that calms people down.