It's not - the only reason I put four
of those damned things in my 88 was because I could get 'em just for the goin' and pickin' them up.
Yep - I put FOUR in, meaning I went through FIVE. All failed the same way - first and second gear stripped (at a minimum.)
Why? Because that gearbox was designed for the Peugeot 505 - half the engine displacement, 1,000# less kerb weight, 2/3 of the torque output, and the internals are too hard
to be useful in this application ("hard" for steel is "strong" - but "hard" is also "brittle." Bad thing.)
I did a FA report on one for Manufacturing Materials & Processes in school a few years back, since I was replacing the damned thing and ripping it down for scrap anyhow. I learned a lot...