For the money spent acquiring & custom installing a 32 valve motor, or any exotic motor, you can build alot of horsepower with a Cleveland, Clevor or Windsor. I would say an all alloy Clevor making 400 bhp at the rear wheels (about 500 bhp at the flywheel) can be had for $10,000. Then there is PI's 427 cubic inch, 500 bhp Windsor for a bit less.
If lots of horsepower is your goal, then I would look in that direction. If the "wow factor" is the goal, perhaps the cammer is more your cup of tea. But then again, an all alloy Clevor or a 427 cubic inch Windsor also has a certain amount of "wow factor".
The push rod V8's can be fuel injected as well, using 5.0 Mustang manifolding, 4 hole throttle bodies (check out
http://www.qualityroadsters.com) or individual runner (8 throttle bodies) manifolding, both downdraft style (Pantera Performance Center) or side draft style (PI Motorsports). Trick Flow is promising the release of a lower Cleveland manifold (2V size ports) to mate with their Windsor upper FI manifolds later this year.
There are many choices now for high horsepower aluminum cylinder heads for the Cleveland from Australian companies AFD & CHI and in the future from Edelbrock and Trick Flow as well. There are also affordable forged steel stroker crankshaft kits.
SJ Performance of Australia is promising the release of a new, all aluminum CLEVELAND engine block later this year. For me, that is nirvana.
George