Start with a KE26, add carbon panels (bonnet, guards, tailgate, roof), full cage, 4agze fitted with both supercharger and big assed turbo. Use a six speed transaxle to keep the weight out of the nose.
Have it sitting nice and low on custom made double wishbone front suspension with an independant rear end as well. As big a brakes as I could get squeezed into 15" rims (hell have them custom made to suit).
Have the thing painted in a custom magenta pearl with a grey interior. Replace the guages with a MOTEC digital display. Have a custom aircon made to suit (I'm getting old and I like my comforts).