I've nipped outside and got my hands and knees dirty looking under the back for the convoy light.With your Ambi's chassis now galvanized I suspect the differential convoy light was probably not re-fitted. Having pumps sucking through other pumps is never a good idea & it is certainly a good idea to get this sorted before you are left beside the road somewhere with the recovery man/lady saying "I'm not putting that on here!!" I've been out of the 101 circuit for a bit now & am curious what tyres are on offer out there now, the 300's which were mega perfect made by Michellin now a distant memory sadly. At the time I found it impossible to obtain the correct 33"/34" height without the fashionable extra width & the bar grips are getting very old now. I have heard of some MOT stations failing vehicles on the date stamped on the tyres. The tallest BF Goodrich offered without the extra width never quite stepping up in the height dept either. If you are feeling very adventurous & not seeking originality, Unimog wheels fit (just) & being 20" have a great selection being aimed at the commercial world. There was a lot of debate going around years ago whether this was a design insistence of Land Rover by the military which would explain the 6 wheel studs. Dunno.
I'm happy to report that it is present. Blending in nicely with the rest of the underside's light coating of crud!
My chassis hasn't been galvanised though. As for tyres, i've just sent a message to Vrakking tyres in Dutchland enquiring on the availablity of their Michelin remoulds. Toyo LT255/85xR16 are 846mm tall and fit onto the 6.5inch rim. From what i gather, the bargrips are 33 inches tall which is 838mm so i might go for a set of these. I expect i'll get over the cost of five @ £206 if i go into extreme denial mode...