im about to start a turbo upgrade from stock twins on a 1ggte to a not so large single. im just getting all my parts and finances in place. let me know if you think i missed anything and save me from being off the road longer than i need to be.

new manfold to head gasket (genuine)
New manifold
turbo to manifold gasket
new turbo
oil line (custom)
water line (custom)
ill need to block one of the old water and oil lines but ill sort that when i get in there
new dump pipe to exisisting pipework
exhaust gasket for dump to turbo
exhaust gasket for dump to current pipe work
custom intercooler pipe from turbo to cooler
custom pipe from turbo to AFM
tune
tyers......


any thing else i have missed?

also should i worry about cleaning out the oil in the intercooler and pipework while im at it or just let the new turbo boost it all threw? i think i know the answer....