https://jdm-car-parts.com/collections/interior-trim-for-skyline-1969-72/products/datsun-competition-racing-type-seat

 

i want them in my 240z but nead a measurement that the supplyer won’t give me

What do you need to know?  

I'm going to put in some König seats in my 240z, they were used in "Original" rally cars!  I've seen them in yellow/black and as in my pic red/black.  They have also a fearly high back.