Which is better; B13 vs B14, p10 vs early p11 (tranny) when it comes to the 5th gear pop out?

I'm in Europe and I don't believe that the P11 (144) does come with the RS5F70A around here.
So I'm wondering if the later models of the RS5F32A are any different than the early?

There is a one car that comes with the RS5F70A around here. That's the N16 (QG18DE) but that doesn't bolt right up on my SR20. Can I replace the the QG18DE's Bellhouse with my RS5F32A's bellhouse?

I desperately need a new gearbox on my daily N/A SR20DE but I hate to have the risk of 5th-gear-popout.

if your in europe your best bet would be to look for the u13 front wheel drive trannies, im in the middle east and yes they are hard to find but its better than going for the alternative.

Please don't flame me for not searching but my head is starting to hurt looking....
I'm Racing a NX2000 and the VLSD is not up to the task. Is there a trans that will accommodate an available Quaife LSD that (even with a bit of fabrication or modification) fits our B13 cars? running a stock motor so power output is not an issue with regards to durability...
Any help would be appreciated.
Cheers,

Please don't flame me for not searching but my head is starting to hurt looking....
I'm Racing a NX2000 and the VLSD is not up to the task. Is there a trans that will accommodate an available Quaife LSD that (even with a bit of fabrication or modification) fits our B13 cars? running a stock motor so power output is not an issue with regards to durability...
Any help would be appreciated.
Cheers,
If you are racing, you want either the NISMO diff, or the Cusco Diff. Stay away from the Quaife.

If you are racing, you want either the NISMO diff, or the Cusco Diff. Stay away from the Quaife.

so which trans will work with either and still bolt up to a VE motor???

so which trans will work with either and still bolt up to a VE motor???

I am pretty sure a B15 trans will bolt up to VE motor, and the Custco and ATS differentials list the P11 as using the same diff as the P10 if that helps. I also have a link to a great article written about our trans.
Building the Bulletproof Transmission, Secrets of the Pros (http://www.motoiq.com/magazine_articles/id/839/pageid/932/building-the-bulletproof-transmission-secrets-of-the-pros.aspx)