Holley 390 nascar carb flow. ( mechanical throttles )

[Tuner]

The HP 390 carbs came in the scene in the mid 90s. Before that, the standard issue 390 that was used in the GN series, both using a straight leg booster, as tuner posted in his pic, to the far left.
That how I recall the late 80s through the 90s anyway?

Did you get your mords wixed? You do mean the booster on the far right, eh?

[Warp Speed]

The HP 390 carbs came in the scene in the mid 90s. Before that, the standard issue 390 that was used in the GN series, both using a straight leg booster, as tuner posted in his pic, to the far left.
That how I recall the late 80s through the 90s anyway?

Did you get your mords wixed? You do mean the booster on the far right, eh?

Yes, I sure did!
Far right! Lol