Budget I suppose if I am looking for a particular output whatever it takes but may take a while to raise the cash if it gets silly.
Basically looking for 680bhp or there abouts I would have thought the BMW V10 would have a lot of expansion in it as its just been developed recently.
Not interested in forced induction looking to stay naturally aspirated if possible.
Dry sump is a yes to reduce the height and c of g
Lightened as much as practical to allow free reving
Wiling to consider most things really except tubos etc