Aftermarket Leaf Spring Bucket

[Updated71]

Has anyone used an aftermarket leaf spring cup or bucket? If so, did it fit and work as it should without modification?

This is the only one I know of for our cars, but believe there are a few more out there that didn't come up in a search:

https://cjracecars.com/product/spring-buckets/

[Updated71]

Apparently Dave makes some:

http://www.pro-touringf-body.com/Suspension_kits.html

And so does Global West:

https://www.globalwest.net/anti-squat-adjustable-leaf-spring-mounts-camaro-firebirds-1970-1971-1972-1973-1974-1975-1976-1977-19.html

Also wondering if the bolt holes are 1/2" or 5/8"??

[79T/Aman]

PTFB's use 1/2" bolts, same as stock.
Boy I have to say GW's explanation as to what it does is stupefying, between the double negative and then saying that they are needed with their cat5 springs ??!! so what did they do before since the cat5 springs pre date they brackets by 20 years...I dunno.

[closf71]

I have a set of the PTFB anti-squat brackets. I haven't installed them yet. Car is currently in the shop.