Thinking of buying a Street Demon Carb...

To help answer the OP's question, I don't have a stock air cleaner, but I have a drop type base on mine which doesn't clear and AFB(AVS) with an electronic choke but it fits the Street Demon just fine.

Dartish said

Are those street demons a spread bore like the thermoquad or will they bolt on his 69 intake without an adapter? If he need to add a 1" thick adapter, I think I'd find a decent avs to rebuild or go with an Edelbrock since he wanted to keep it stockish looking

Click to expand...

The Street Demon is not a spread bore, the secondaries are a "goggle valve" type flap that will work on a square bore base intake just fine. However I'm not sure if they will work bolted right up to a square bore 340 intake is not completely open in the middle.