The Nulon 15w50 Street and track is a great oil especially for the $$ as well. Always have had good results running Nulon oils (much prefer Nulon over that other Aussie brand that starts with a “P”) and the Nulon tech department are great to deal with as well.
Porsche looks good mate. The WTAC is an awesome event to go to. Last time I went was 2019 but aiming to go again this year.
Have you considered the Gulf Western Comp R 50 ? It’s a Racing 25w50 that’s supposed to be compatible with all fuel types. Some of the Top fuel dragsters use it as well...