Originally Posted by Mcfarlane11

rs internals is fine mate for around 300 any more than that I would recommend you go forged, boost was running around 1.3 bar but would float at high revs but 1.1bar was more than fine,

using megasquirt management, and went new route with forged simply to cope with more power. also M12 bolts allow me to run more boost, as even the ARP head stud and nut kit can lift from the block.