I made 1 adapter for the Whipple Elliptical & wasn’t a big fan of how the blade fit the blower opening. I recommend selling your Elliptical & get the KB 168.
My 2.3 was ported & maxed out. It went 158mph in -200 DA... I’ve gone 159.6 at same 18-18.5 psi boost in 1500 DA with the 2.65... not ported & not maxed out.