Engine in bits (mods)

[ALZ]

Just wondering while my engine is in bits (new head on way) is there any mods that can be done ??? .My exhaust as been done 3" down pipe 2.5 straight through stainless.
Can I:-
Gas flow and port a deisel
upgrade turbo (have 2 mill washers in already)
Mirror finish pistons (leaving outer carbon seal)
Ive worked on petrol engines before this is my first deisel engine.Golden opertunity to get stuck in.Many thanks in advance chaps.

[BUSHWHACKER]

I don't think porting and polishing works with a diesel engine, as they work on the 'squish ignition ' principle.

It seems as though you have done the best modification and that is the exhaust. A cool air induction set-up will be beneficial too!