With a set of mahle pistons, ARP Head Studs, and our Nickies cylinders, ~$2200 (May special) 94a/b. How much boost would be a question to ask for those on here who have used the cast pistons; our thickwalled 90.5s would be good to 25 psi and thickwalled 92s to 15psi. We don't recommend using our 94s for boost, due to thin walls. Also, all of our current turbo customers have opted for forged JE pistons, which bring the kit cost up to $2700. This price includes one off, custom designed pistons, to your desired specs. For example, one customer needed 20ccs in the pistons to dial in their compression ratio to 8.0:1, which saved him from having to semi-hemi his heads for the extra ccs. Again, figuring in the savings from ditching the 911 system paired with the added longevity a set of Nickies provides makes for great combo.
Charles Navarro
LN Engineering
http://www.LNengineering.com
Aircooled Precision Performance