Personally, I wouldn't spend much effort searching for a 4300 except for a static display. Back when the cars were new, tuners used to refer to the Motorcraft 4300s (both sizes) as 'Untunable instruments of the Devil'. Some shops used to give them away as scrap zinc. Good luck-
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.