ive done this job a few times myself and its best not too totaly remove the
dash, just pull it forward as far as you can with the heater controls etc still
attached too it.
easyer said than done but im faily sure that the way its printed in the workshop
As for fixings pretty much remove everthing, the main bolts are 6mm hex head i
think, disconect the coolant pipes too the matrix under the bonnet and undo the
10mm nuts for the heater box on the bulk head.
i hope something ive said helps.