I'll have to have a look for these nuts when I get home this evening but the problem was removing the tubing from the matrix to the fan housing. Will clear it out bit by bit and see if I can see anymore mounting screws/bolts.
Glad to finally have a runabout now, gives me chance to remove the green filters and replace the bulbs with blue led's in the clocks and make my screen mount for the dash whilst everythings out

Will update on progress over following weeks.