don't hold me to it but seem to remember a cosworth is 1220kg. seem to think i need to lose 220kg in my project to be less than 1000kg. i think an xr4i was a little less (despite the 6 cylinder engine). i can't remember where the figures came from sorry. as a bit of a comparison i know that an xr4x4 with 2.9i fitted was 1290kg. hope this helps.