one other thing is that never did we require any changing of the needle and seat for boosting our setups!
Only things were float was changed to solid plastic if it wasn't already!
Secondaries jet was drilled to the size off a 3 litre commodore jet and for hi boost the carbies needed to be sealed better!

Can you find out and let us know what was used on the KB laser turbos ( factory)
regarding fuel pumps and pressure as this is a major factor! ( limiting the amount of boost able to be applied to the system before leaning out!)

Cheers Steve