My brother has decided to try his hand at building race cars, specifically metric full body cars. He has asked me to help him with setting up the front end and driving one for him as a "house car". I've been creeping through the history and have come up with the following trends. Please comment if my summarizing is not correct. 1.)Camber should be set so 1° gain per 1" travel. 2.) Caster should be set to gain a minimal amount during bump. #1 is to maximize tire surface area #2 so the car feels stable during cornering. I have a question when it comes to roll centers. In short, more upper a-arm angle, shorter roll center. Shorter roll center acts like a shorter arm (faster movement & stiffer rate (RF)). Many of the previous threads state that front and rear roll centers work together, my question is where does a guy start and how do you know which one needs to change. For now, we are going to purchase a rear-end from a local builder, but won't necessarily know how the RC compare. How does one go about changing when the car doesn't work well? Start in the front for corner entry and rear for transfer and exit?The other question I have after creeping around the FB classifieds, is it appears most builders are building at max set-back and not building the cars real heavy upfront. In a lot of cases it seems looks like max of 2 1-1/4" tubes tied together around the front of the engine and running back to the main cage. Is this to allow the cars to flex more than previous? Seems like there would be an awful lot of flex in these during bump. Is that the intended to get RF to seem softer until the center of the corner?Any suggestions or tips would be awesome! Already feels like the off season is dragging by.Thanks!Banana