I was reading the Autolite/Motorcraft carb forum and noticed some performance claims made by a person and his 289.  383 HP on 89 octane fuel.  Engine is streetable and has good mileage.  Carb in use is a 4100 1.12 venturi worked over by Pony (600cfm). 

I was thinking no way, but then he could have some nitrous in the trunk that wasnt mentioned .

Mike, located in the Siskiyou mountains, Southern, OR 292 powered 1946 Ford 1/2 ton, '62 Mercury Meteor, '55 Country Squire (parting out), '64 Falcon, '54 Ford 600 tractor.