750 Mighty Demon on my 340?

The Demon I had lasted 2 weeks on my 360 before I ripped it off and threw it in the corner and then sold it at the Portland swapmeet for dirt cheap.

They are one of the smoothest carbs I have ever played with but the quality is crap and you have to retune it everytime you drive the car and that is after 2 rebuild kits.
Go with a bigger Eddy or a Holley but I would say if it aint broke...

If you want a spiffy new carb I would jump on the one that KSP has for sale.