So...this isnt an exhaustive list, but more the stuff ppl never consider that having done it enough myself may give you more to consider
- remove std manifold that often means snapped studs....equals time to remove and replace,
- new exhaust manifold gaskets and turbo dump gaskets
- aftermarket low mount manifold/turbo means new coolant and oil lines (plus move std wiring etc that is too close to the manifold/dump)
- removing turbo means dumping coolant so may as well do oil and filter all at the same time.
- changing injectors so may as well slip a new fuel filter in there. How old is the current one?
- custom dump easily 250-350 including flanges, gaskets, welding & material
I would say the price is very reasonable.