XHD rear Leaf spring question P4452982/3

Ontario! I also checked the listings that said they are B body springs but most catalogs say they are the same springs used in the A body 340 powered cars. Also, I checked the lengths and measurements to confirm they are A body sized.
Okay. Please post before and after pictures of your car. I’d really like to see the difference. I might like to change springs to gain maybe 1/2-1" increase in ride height