One thing I have been looking at recently is the cost of control arms for those of us with late-offset cars.
Due to the issues of repairing/rebuilding the ball-joints on these arms, it is often safer to replace them. However at over $500 each side this can be very expensive (and a lot more than the early offset). I have found there are several cheaper after-market options from the likes of paragon and blaszakprecision, some of which use steel and most have easily changeable ball joints.
www.paragon-products.com/Control-Arm-Set...71.407.153d-race.htm
I understand that some people are worried about after-market arms allowing more extreme ride-heights but this can surely be control with a minimum allowable.
The major advantage of these arms is most are stronger and with the extra stress on the joint next year with the addition of the RR tires. This can't be a bad thing, surely?