[updated:LAST EDITED ON 08-Apr-02 AT 04:13 PM (EST)]Your '81 Bronco project sounds cool! If you are looking to go from 460cid to 514cid,F.R.P.P. has a 514 stroker kit(part # M-6013-B514)on page 44 of their 2002 catalog that lists for $2,200.They also sell the 514 crankshaft separately(#M-6303-A514) for $795(page 46).A set of 8 514 pistons(#M-6108-B514) for $465,and two different sets of 514 connecting rods(#M-6200-A514)($445)&(#M-6200-C514) ($695).All of these items are found on page 45 of the catalog,although it is probably cheaper to buy everything together in the M-6013-B514 kit.They also offer a complete crate engine(M-6007-C514) (page 13) for $7,395.A 514 short block assembly(M-6009-C514) (page 17) lists for $3,395.It sounds like you have collected most of the peices already,so these are out.As for adding EFI to a 514,I forget which magazine did a story on it,but it was about a EFI514 monitored by either EEC-IV,or EEC-V,and built by some Ford engineers.I'll have to see if I can dig up that article,and read it again.You could always go with an aftermarket EFI set-up.Good luck.