-cyl4 cooling mod
-255/257 oil pan/dipstick with a killerb pickup/baffle
-depending on the gauges youll be running Id put a bung on said oil pan so you can run a temp sensor in it without having to worry about a sandwich leaking or having to deal with a temp sensor in the OEM oil drain plug adapter. That way you can run a magnetic drain plug
-maybe reroute the harness to go under the turbo inlet to clean it up.
-an aftermarket inlet
-better oil lines (braided). Ie oil drain, oil feed
-IAG or LIC alum "1/2 moon" cam plugs. Replace those when you do the VC gaskets
-intake manifold spacers
All those will keep the engine oiled nicely, cooled nicely and replace pita components that fail regularly. GL. Looking forward to seeing it in the postal. Maybe get the manifold powdered while its out if you go that route.