I have got a xr3i engine efi that had a full engine rebuild in 1999 due to the price of xr3is going up in value. The chap who rebuilt the engine MR NELSON who rebuilds m powered bmw engines, showed me all the work done. It had new pistons,valves gaskets the lot. I had the engine in my xr3i and was a cracking engine! i know there not worth £20.000 but whats the engine worth and is anybody intrested in it looking for about £100?