[Beejay]

Dean,

Get plenty of advice before going for that 5L, I think you are going to need to get the new motor engineered, and you will not be able to reverse the decision. Many Cobra owners would kill for a legal carby 351 V8 rather than a 5L, so I think you might actually go backwards in resale value too!

As others have said, get a good engine builder to work the 351 with an EFI set up, you will make much more Hp and should still stay relaible if the Combo is right.

My 2 Cents.

Ben