Thanks Mick- have the motor out for a refresh, and a few upgrades. The carbs are on my bench- so I'll check which jets are in them as long as they're laying there. I'm not sure which end it's rich on- I have a 5 speed with 3.54 Dana. and tall 295/50/18's- so 70 is just under 2,000 RPM. I like to get on it- but not flog the crap out of it. Little idling as I live on a highway, work in a small town. The carbs come on at the same time- but I could adjust the rear to hit later with the linkage. It doesn't burn your eyes- but I can taste the exhaust some after a while.