ok i read the archive of the Miata diff swap and was wondering if any has done it and ran it a while and had any issues, i'm about to do the swap on my turbo swap FC, i have a stock diff well had one i broke the spider gears so any info would be great on strength and longevity of the swap and will be greatly appreciated

 

Miata Torsen units aren't known for their strength so if you destroyed your stock differential as you say I'd look for other options like a TII swap.

 

You are right. Didn't last over a day and I grenaded it and blew a hole in my diff cover