.80 and .64 is a tad big but good with low boost and higher compression.

Saab 95 and 9000 are also common for carbon sealed t20 and t25 they are around .48 to .56 are on both ends in/ex. Saab @ 1800rpm achieve almost 70% torque so quite early boost but they have 2ltr to play where otherwise their NA 16v engines are quite torqueless down low unlike modern VTEC/VVT and variable capacity inlet manis.

Simon builds great stuff Id definitely get the whole engine built and tuned by him if he has time and use e-go.com.au for cheap freight to and from him. Otherwise a mani from him would be the goods.