went back down to my mates shed again tonight as my parts i ordered about 2 1/2 weeks ago from the UAE finally arrived...it's bloody rediculous that i can get genuine parts from UAE at a quarter of the price to what the local Toyota stealerships charge here...no wonder people buy online these days.
anyhow that aside... fitted a new viscous fan hub, new radiator shroud and swapped out the 105 series (blue dot) fan blade for an 80 series (yellow dot) one. will now see if the new viscous fan hub stops the temp gauge climbing on big hills whilst i'm towing our camper trailer.