Hybrid Bulks... Again

[what do now]

Hi guys.

First time post here, sorry for this thread I have looked at the other Hybrid Threads but I still have some questions. First of all let me admit I know nothing about diffs, fairly new to the hobby, so if these questions are stupid I apologise.

I have a E-Maxx 3905 with the FLM Chassis, MMM Combo running 4S. I have the hybrids on order but just realised that the 1/8 scale diffs are nearly all 43/10,11,13. At the moment with the stock emaxx diffs I'm running a 64 Spur 22 Pinion and I like the speed I'm getting, no heat problems or anything so that set-up works for me.

If I want that kind of speed with the 1/8 diffs I'd have to gear a lot lower and I dont want to, well not to the low extent I'd have to go. So what I'm wondering is are there any 1/8 diffs that has a gearing more like the stock emaxx or erevo gearing 37/13.

Another thing I read in other threads that not all 1/8 diffs fit the FLM Hybrid Bulk so which ones do?

Thanks guys.