Personally, I think the money is better spent using a 36-horse shroud like what Jake used in his shroud comparison tests (which outperformed all other shrouds). When paired with a set of Nickies, this combo would most definately go a long way to dissipating the heat put into the engine and generated by the engine. To keep the cost down, one could always use pistons from a cima/mahle p/c kit- we've found this works great when paired with our cylinders.
Charles Navarro
LN Engineering
http://www.LNengineering.com
Aircooled Precision Performance