need 3/10th

You need to experiment with the preload on the caltracs to get it to leave straight. There are threads here and on b-bodies and you tube. With the small wheel well on a 66/67 satellite, i dont think that the ten inch wheel you need will fit. I would suggest a new set of 9x28 slicks, or 9x30 if you have the room at the front of the wheelwell opening.
It's real hard to learn how to finesse the stickshift launch with very limited track time.