Nice one! Sounds like you have a plan for it. Do what you want to do and don't let anybody give you shit for it.
BTW this is one of my fave engines ever, an RB26DE with trumpets. Just so awesome but broke the brain's of all the RB26 purists.
More on that 240 here; https://dsportmag.com/the-cars/rb26-powered-s30-sung-kangs-award-winning-restomod/