You can find fibreglass and carbon fibre reproduction boot lids for a Mark II Ford Escort that sound pretty light, but how much does the standard trunk lid weigh in the first place?

We weighed this one – from a 1977 Mark II 2.0L GL four-door sedan from Australia – at 9.0kg.
Keep in mind that the weight saving is not the only reason to consider a fibreglass alternative – the lack of rust is certainly an additional plus.
Simply looking for a replacement stock boot lid? You can sometimes find one on eBay Australia.