You couldn't pay me to use the stuff again,i've just completely had to re-do the entire chassis on my '50.
Despite following the instructions to the letter it hasn't lasted well.
I should add this was a California truck and had minimal rust.
As a consequence i've since had to replace my LH outer cowl section and much of the inner wheel well and also the lower RH outer.
The chassis was a complete mess,the POR has peeled off in sheets.
Here's what my RH wheel well looked like,you can also see part of the chassis in the shot too.
Rust!