i need help finding a few things if anyone can help it would be greatly appreciated.

clear timing cover, 2.5L ranger. colored cam gear, red or blue preferred or can i paint mine?

underdrive pulley(s) 2.5l 98 ranger. * got lucky on mine cant find more for my brothers *

what kind of car can i pull an E-fan from that would fit nicely into my ranger?

turbo down pipe and or manifold, what is the best/affordable forged internals for a 2.5l

whats best/affordable injectors 42lbs?

and once i have all this done and a little turbo, should i tune my computer or buy a pretuned from like jet or something? * why do we need to tune em? isnt that what the 100+ sensors are for to sense when something changes and adjust accordingly. lol