Hello all I'm new to this awesome forum. My son Hudson and I are rebuilding a 1935 Hudson 2dr Sedan with modern appointments. I'm hoping some one can help.

I'm trying to find out the hub to hub tread width measurement of the IRS differential in a 2001-05 Lexus IS300 as I think it's close to the right width for our project but haven't been able to confirm.
Our 5 local wreckers only have 1 car but one side has been completely stripped and parts missing off the other. Even local used car dealers don't have one. Many hours of web crawling hasn't found the width either.

We are also planning on a 1UZ engine with automatic transmission. Your experiences and exchange of info is very helpful. Based on reading here a complete donor car will make wiring easier.

Thanks much.