tube k-frame
 

I would like to know if anyone is makeing a tub k-frame for the 90 to 93 miata for a 5.0 v8 conversion

The closest you'll come to that is the V8R subframe with your own 5.0 stands at this point.

can you give me some more info on the ( V8R subframe? )

Take a look here: http://www.v8roadsters.com/category-s/66.htm

thanks for the info just what i was looking for