The only thing i know about this engine is the compression
ratio is a bit high for much boost. can one easily get
dished pistons? What about the rest of the engine, can it
handle the extra stress? Can the fuel system be easily
modified? can the stock computer handle it or can it be
modified? I don't have the vaguest idea of how someone might
respond to these questions. The reason i am interested is
because i heard about somebody tuboing a ferrari. It
performed very well because of the small pistons. the idea
is detonation is detured because there isn't enough time for
it to occur. I figured a jag is much less expensive than a
ferrari but i don't know how much extra power it can support.

I'm not sure, but you could check this website.

http://www.jagweb.com/aj6eng/index.html

http://www.jagweb.com/aj6eng/v12_4_valve.jpg

What did you find out?