If you could adapt the L92 Caddy LS2 heads, that would be great.
Those are cheap price wise(considering how much they flow),& my friend has a CNC program to make them flow even more.
http://www.proheads.com/WCCH%20L-92.html http://www.proheads.com/ The head bolt pattern is off though.
These heads flow awesome!!!
MBHD