'70 Dart 392 Project; what direction?

Check out Engine Masters Season 5 Episode 26. They dyno test a 5.7 with the SRV locked in both positions.
I'll be real surprised if you don't modify your firewall to make your SRV functional after seeing the data.
I'm sure you're correct and that it's a worthwhile feature. Though I did a quick search on google and can't find that specific episode. Might dive deeper into it later but at this point it may be a future modification for me. Really wanting to get the car up and running this summer and at this point I'm done with all my body work....

Mike