Not too awful bad, pull both intakes, upper fan shorud, inner shroud (need to rotate.to remove) and fan, remove belt and fan hub, remove bolts for vacuum pump cover and nut holding gear on. Remove supply lines to pump (forgot youre gonna need orings for that, 2 green, 2 yellow), remove 2 19mm fuel line nuts and kinda bend lines out of the way, unless you are gonna deplace them. Remveove 1 8mm headed bolt retaining lines to retainng bracket, 2 8mm headed bolts holding retaining bracket to bolts holding pump tioo front cover, 3 13mm nuts holding pump to front cover. Use either a damper puller with 2 6mmx1.0 threaded bolts(6.0 intake bolts work good) or an air hammer if you dont plan on reselling or reusing th pump. Then reverse procedure. Bleed fuel sysatem by turning key on about 10 times for 10-15 seconds each time prior to starting.