Edelbrock valve spring replacements

Speaking of the viability of beehive springs, i have first hand knowledge running them in a 71 Duster i sold a year ago this past spring.
You can Google “ LA Confidential Mopar” which will pull up the magazine build article.
Little 318 iron headed pump gas motor i went mid 11’s with at 3400 pounds. Beat on it for three seasons, after all the dyno flogging, then it sitting in a corner for several years before i ran it.
Shifted it at 6500