does 502x body fit 511
 

as above.

Yes!

There is no such thing as a Tamiya 502x body...

If you mean original tamiya bodies that is, which we cannot tell from the enormous amount of information you give.....

If you do: both kits use the bodyset as in Tamiya part#54133

Yeh that is what I thought, but just checking.

Pro-line make a bulldog body for the 502x, so guess I will go that route as I need to place an order from amain anyway.

I can get the tamiya bodyset from ebay, but would like something different.

Thanks