Slayer, SOAD, Slayer, Disturbed, Slayer, In Flames, Slayer, Metallica ,Slayer, Nightwish, Slayer, Chili Peppers. And I occasionally listen to a little bit of Slayer
How much does you rod weigh? Bear in mind that these engines are meant for 700- 800 kg cars and so might be a little low on torque even for a nice cruiser. Why not look at L-series datsun engines (L16,L18,L20). A 2 litre L20 might be better suited. They are a bit bigger than the A-series but with people using 454's I don't think you'll have a problem with space. And they are also more common and easier to get parts for than A-series. But obviously you'll use more fuel too.
Someone mentioned to me that they have a friend who recently bought a R100 with a 10A in it. And I believe he was going to swap it for a 12A. He'll probably read this thread soon too