[mtm_seven]

Thanks for the tip and links.

That aeromotive 'kinda' looks like how the edelbrock regulator mounts - it's a smooth bore with an o-ring... I would need to remove the rail and tap it in order to install a fitting if it isn't exactly the same.

I'm using the FAST computer which is auto tuning - I had no luck with the Edelbrock tune sequence. ODB1 is not for me.

I could block off the vacuum to the regulator and let it max out to see if more pressure would help, but for now, I'm OK. After all, the longblock is all stock GM. I doubt I'll get a whole lotta power out of it anyway.