2 live had probs with a Kent cam locater lobe snapping and wedging itself into the head...
Piper are good on the whole. Nothing special at all in terms of lift values etc, but they dont break like Kents do as far as I know.
Martin, yours and Winstons weren't as quick as the Nana or 2 lives to be fair, they had nothing inside them and weighed over 100kg's less.
Cams deffo work, but I'd say it depends on what cams you go for and who you get to time and map them that counts. 2 lives was a 14.6 car pre cams, then 14.4 with untimed cams. Once mapped it was 14.0 all day long with back seats and spare out. To this day nothing in similar spec has come close. On the road the difference really shows as the speeds rise and you start throwing hills into the equation.