I find re-fitting the dashboard a real pig of a job to do.
Firstly the black crashpad is normally in a bad way so needs replacement. The plastic ones from SJS are good quality, but hard to cut to shape accurately.
Secondly, those 4 screw fixings along the top are very difficult to get to, lying underneath hoping to get the nut on the thread.
Thirdly, those 4 screw fixings are supposed to line up with U shaped pieces of fibreglass carefully cut by Lotus to be in exactly the right position. Some hope. Most are broken, or in the wrong position.
I make up L shaped metal brackets, put 8mm Rivnuts in the brackets, and carefully position the brackets to hopefully line up with the dashboard holes, pop riveting the brackets to the fibreglass. Lots of patience, measuring, and careful moving is needed to get them to line up properly with the holes in the dash, but with 4 Rivnuts in the correct position, screwing in those 4 bolts should, I repeat should, be easier than trying to get the nuts on the back of the dash while lying in the footwell.
Make sure the Rivnuts are secure in the brackets and do not turn in the holes.