Alistair, where are you proposing to buy a pair of (twin-choke) throttle bodies from, for the sum of £450?
What air filters would you recomend using with these?
I am currently looking at fitting a Zetec to a Westfield on a limited budget. This is 1988 car, but it has never been registered and therefore will have to go for IVA. This means it will probably have to have a cat fitted.

Regards
Jon