I've fitted an ektor boss kit on to my ph2 spider
...with no problems
But be aware that the automatic indicator return wont work.
A nice side-effect of the ektor boss is...it comes with a blank horn-button
Which means that the alfa badge from the now obsolete 916 steering-wheel fits spot on
A chap in Australia has been trying to fit a 147 steering-wheel with all its controls working...
...not a straight forward job...(NO AIRBAG either!)
a 147 Steering-wheel will fit
I'll take some pictures today of my lovely momo
and post them later