Good call, I did the same thing. Turbine housing swap is easy anyways.

just an update on this. never got around to posting results but here they are.

https://www.miataturbo.net/attachmen...ine=1390767033

my mapper suggests that the crazy amount it needed to be strapped down and tyre pressures lowered would be worth around another 30hp. this was at 1.6bar. didnt really want to run any more as it is now killing gearboxes. once the new box is sorted we will turn it up to 1.8 and see where we are. i am happy with the results though. what u think? did i make the rite decision on the GTX2867R?