Does any one know where i could get a 3rd member or a ring and pinion for my 84 rx7 13b engine gsl-se model it would be a great help i phone everyone in my area and noone has anything

ebay usually has a few.

I have a spare rear end from a 84 GSL. Its a limited slip disc brake rear end but I think the axles are a bit different.

as long as its 84-85 it dosent matter the only difference is the gear ratio is 3.90. The Gslse is 4.07 or a 4.11. Or you could get a kia sportage 4x4 front diff its a 4.77. direct bolt in application to 84-85 rears. The only thing is that its an open diff. I have yet to find out if the kia gears can be fitted to the mazda carrier to utilize the LSD. They can usually be found dirt cheap. Your car will be way faster but gas mileage might suffer.