ok so cams are in, fitted to standard positions, no adj. gears...due to other work also being done to car over last few weekends, haven't done heaps of driving as yet or fully retuned, but impressions so far - idle is a little bit rougher but nothing overly noticeable. If you're giving it low throttle, standard cams win as there's a slight loss in pickup. If you're giving it medium or more throttle, the 256's are noticeably better although haven't even given it full throttle yet. Looking forward to retuning and seeing the end result.