Trans-Dapt Performance 2199 Carb Adptr 460 Ford

Will this item fit my 1975 lincoln 4350 spreadboard carb? Im trying to get rid of the old Motorcraft and convert over to edelbrock 1405

Can i use this to replace the egr plate on my stock 460 in a 1978 lincoln mark v where i will continue to use the stock manifold and stock carburetor?

how long are the studs with this kit

Will this fit a 1991 460 efi intake manifold?