Realistically, the cobra is pretty much a caricature of a sports car anyway. A nasty motor poking out the top only helps in my book. Things like that help to distinguish the difference between tribute and replica.
I kind of wish I had gone for those Cleveland heads instead of my 235cc twisted wedge R heads. Those valve covers look wicked enough to do it even without the performance benefits. If I didn't have stupid money already tied up in my exhaust I'd consider a swap. That said, the distributor would have to go.