For $3000 you are just getting started. You will need, additionally, their intake & exhaust (or custom make your own to fit), studs, springs & locks, and quite a few more accesories to make the engine ready to run.
Of course you wouldn't want to invest this much without doing proper justice to your bottom end as well.
You can count on spending 4 grand plus easily in the finished head assembly before you're done if you go with the Kirby head. This isn't the type of money enthusiasts spend on their street rods. You can build a couple of 300+ HP small blocks complete for that kind of money.
I would love to do a cast 12-port head for about 1/3 the cost of the Sissell head, for street use. I believe such a head would sell really well, if a profit could be made at that price.
-magic mike-
