While browsing facebook Marketplace, ran across this little fellow for the price of free or donation, so i ran up this morning and relieved him of this item . Only had a single card for 91 and below domestics, but it works on my bonnie, I was looking for something like this so I could get more Data on the tuning of this carb, Whoever built this carb got it pretty close, Mixture dwells ranged from 45-48 so that explains the good mileage on the highway . Also found out this thing doesnt hit closed loop until 199-200 degrees .