Clio 172 Turbo Gearbox Suggestion

[cliorsturbo]

Hi everyone,

I have a Clio RS Ph1 Turbo. About 400+ Hp. Currently has a original JC5 089 gearbox.
Gearbox ratios are just right for me. But after the revision, the gears started not shifting.
I can't find the JC5 089 gearbox. I found a JB1 974 gearbox that I can buy. Kangoo 1.9D 5 speed gearbox.

This transmission fit my vehicle? My transmission ratios change a lot? Honestly, it would be better if it was a little longer.
Does it withstand more torque than the JC5?

Thanks.

 

[kurai]

The Jc5 was kinda the "top" revision of that series of gearboxes.
I had JB1 on 1.4 16v clio mk2.
It has smaller and different differential bearings. Also I am not sure it has same bolt pattern.
I would stay on jC5 , maybe from a diesel version but not lower tier models like jb1.
Best would be fitting a stronger box.