Thermoquad users?

I'm looking into maybe installing one for mileage, just wondering how they react with a spacer, i'm running the crosswind RPM air-gap & a 650dp, i could jet the holley down but i'm sure the TQ will still do better on gas, is anyone running the TQ with a spacer?

Is the 9103S a good carb?

It's a maginal gain in mileage. Take the time to get the Holley dialed in realllly good. Cheaper in the long run.

The TQ your looking at has the big primaries. For mileage gains, look for the small primary TQ. Also, if you do not have a MSD, get one, there a good help in finding some milegae.