I'm glad somebody asked this as im looking at turboing an st 170 engine for my mk4 escort build!
Mmmm.the only question is over the vvti..to run or not to run??
Gotech mfi pro and pro x, have a built in function to activate the VVT, and I think dta has full control over it
I say be different and keep it
Frs internals with decent valve springs and gaskets with frs plugs and should see good figures
There was a guy running 390bhp on a stock frs bottom end not long ago