the strut brace has nothing to do with the engine , if it is a vt/vx model strut brace it will fit.
EDIT: i have a fully adjustable strut brace on my vx cant remember the brand name.
Why don't you buy the vz ss strut brace frown holdens all you gotta do is drill the holes out and you buy the bolts at the same time its only about 60bucks for the whole lot mate
so is there any noticeable diffrence with having a strut brace or not having 1? only ask cause i had 1 of my old vn commodore and didnt really feel any diffrence