How much should i pay max for a mk1 or 2 escort, or wouldd it be better to buy a rear diff from a ford scarp yard place thing and get a sierra??

old escorts seem steep on places like ebay, and cortinas too. if you can find a running one for less than £100 (a good runner ideally) then its probably worth getting. Sierras are CHEAP, easily get one on ebay running for 50 spondulies. some go for 5 pounds. just wait for the right thing though, with your engine of choice. i rushed it and got a 1.6 one which i am regretting now...