What fuel to use?

[MarkyMark12345]

Recently picked up a '72 Cuda w/ a 440 and seems to be fully built, but we know very little about the car. Here are the mods I can see (having not yet opened up the engine):
Proform 950 carb
Weiand 7534 intake
MSD 6AL (Mopar) ignition box
Crane Cams LX92 ignition coil

We got it from a dealership that got it as a trade-in, so they were not much help, as far as what else was modded on the car and how it was maintained previously. What fuel should I be running on this bad boy?

[burntorange70]

I would think the car was built as a street car so 93 should be fine. If you can, find out what the CR is.

[6packcuda]

Definitely hard to say without knowing the compression ratio. I'd say try running 93 and listen for detonation. If you don't hear any, it should be ok.

[MarkyMark12345]

So far so good w/ the 93! thanks for the input!!!