Holley 1850-5

I tried it on a 360 4-speed; not nearly big enough. So I modded it lean on the primary side and it became my hiway carb.I fattened up the secondaries a tad to average it out at WOT, and it makes enough juice to pass.
I agree that the DP is a better manual-trans option. We don't have the Torque-multiplying fluid coupling advantage, nor the slip from idle to stall, So if you're down there, and the tires won't spin, it's a bit of a wait to get to where the power is. And that is where the DPs shine; a lil toe on the clutch and stomp on it and G-o-n-e is you.
With a 360, just stompit.
Theoretically it is big enough, for the stock 340
Depending on your cylinder pressure, it can make or break your combo.Modding it lean is not for the faint of heart. That is much easier done with a metering-rod carb, if you can get a kit for it..... like the Edelbrocks.