Edy,,,
the rods are forged, the pistons are cast
You just really need to monitor detonation, cast pistons cannot take much detonation before they blow apart.
I would buy a J&S safegaurd to control your timing & to prevent detonation.
http://www.jandssafeguard.com/ Works great on my Syclone, & my friend has one on his 572 BBC awesome!!!
MBHD
