Hi my names Wes, maybe you can help me,

I have a sierra sapphire 2000e 4x4 I am about to start building zetec turbo for it and i'm looking for 300bhp, so far I have an st170 engine (I'm hearing its best too use these as they have forged internals but even still do the internals need too be changed for a set of steel rods and forged pistons from burtons)?

what head do i use (st170 head a blacktop head or frs head and do I need too buy some cams)? what headgasket and do I need a decomp plate too? what inlet do I use (is a frs inlet any good but which turbo/turbo housing)? is there anything else I will need. Oh and where do I get mounts from as i'm

cheers for any help it is much appreciated Wes