Just get some id and use it,dont worry about having no chassis numbers stamped on the strut top,my old mex had no numbers, it had new struttop plates and they never bothered stamping the numbers back in,it dont mean its not a mex,you can buy new top plates, just get them stamped first with the new id numbers and welded in place then get it painted,then get a new vin plate off ebay get hat stamped job done