Seems a strange rule hey !
Early mk1 is ok as emissions weren't a big deal then. Say if you go twin 48 Webers, all they can pick on is the air cleaner type, from memory they allow oil foam socks now but years ago I had to make a air box from a $9 toolbox . As stated in earlier post, our rules are by far the stupidest going ...
I have plans on a later project to go diesel turbo from a Mondeo, trannit van or focus tdci ... In another escort van keeping rwd !!