Bad news Mate, only a 145/6 boxer box will fit.
Worse news, I have one but with both our 145 & 6 been boxer's I have to hang on to it.
Good news... Mullingar Dismantler's 044 43755 have a 146 or 2 & may stll have the boxes...
better news, I've heard there's a 146 out in the scrap yards in Dunsink near Finglas.
2 questions back for ya if you find a driverside headlamp could you let me know. And did a friend of yours recently do the PDC course at Mondello ??
The boxer engined cars are starting to reach 33 prices now so a new box is not worth it, & secondhand should cost you more than €300, new I think they are €1000 eek!
2x 145, 4x 75, 4x Sprints,a 156, 146 now a 155