Ooooo i'll be after some bits if you break it
Just kidding dude, just keep your head up and keep at it man you'll get there in the end

Did you not know wether it was a nikasil or alusil block when you bought the car?
BTW that 80c thermostat should fit my engine too shouldnt it? If so have you got a part number and manfacturer of it? Just wondering if it's worth putting a lower thermo in even though i'm not doing the rest of the fan delete mod