Servo change when dual feeding?

[77 cruiser]

I'm using an older 200 servo now but they have no return spring. How is this going to play out when I dual feed?
Is the band going to release quick enough?

 

[SS/GN]

I think when you get into shift kits and dual feeding you should buy the entire "recipe" from one of our vendors. Sometimes when you mix and match you create headaches. Just my thoughts but the combination is as important as the parts

 

[77 cruiser]

I emailed Chris on this & he said it should work fine, as I ordered his spacer plate too.