Ok have have a uk box 3.54 ratio with straight cut synchro PPG fitted.
I also have a type-r DCCD box 4.44 ratio.

I would like to make a box up with the PPG gearkit with DCCD the longest ratio possible and I also need to use an R180 rear diff what are my options?

I have an R180 4.44 rear diff and a R160 4.1 rear diff (can i fit R180 shafts to this)?

Cheers
Ciaran

 

longest ratio would be uk box, swap over dccd tail end and job done. No resetting front diff backlash, preload etc.

you would then need 3.9 rear diff. Im sure these are avaliable in r180 form.