Lakewood or Competition Engineering make em, and while they're old school, they work! The 20 yo son of my best bud won the track champion in SP and King ofthe track for a Wally last year in a car a lot like that one.
70 Camaro with my ol 408 sb running high 10's up here in Co. He kicked all of our 4-link, big tired, dragster driving butts with it...... I had a similar setup in my 63 Nova and won 2 championships with it back in the day.