Mace rockers
A couple of points on increasing the rocker ratio:
1. I believe, from what I've been reading, that increasing the ratio by essentially 11.7% will require a spring that will be able to handle the extra speed of the lift. Remember, the large and heavy intake valve is going to be jerked around at a faster rate up and down and up to, presumably, higher RPM's due to the higher lift that shoud extend the cam's range. So, higher RPM, faster movement rate, and heavy intake valve lead me to think that the LS3/LS9 spring is a good minimum piece of insurance for $70. I think the PAC 1215 spring is probably the best bet, but not sure how the 115 lbs on the seat will effect the DOD lifters. Anyway, you might be safe with the stock springs but I bet that they poop out early at higher RPM's.
2. I wasn't aware that we could use the stock pushrods, I thought the 7.45" were required. That is good news. How do they achieve the extra lift without changing the geometry at the pushrod? But if that is true, fantastic.
3. The price on the Mace website was $396 Australian dollars. The $US and $AU dollar are nearly 1:1 right now so that is good news. Actually $1 US buys $1.02 AU.