dude its an old truck what would u expect??
i would be pissed if i replace the alt and then 6 months later i have to do it again.
the stuff i replaced on mine is the first time, they still were factory parts, so considering thats 10 years...thats quite a good time.
do as the prev post; go buying the parts when u get money, and when u finally have all u can do the repair.
i try to do it that way, i had the rear shocks under my bed like 2 weeks, waiting to buy the front ones.
today i took it to the mec for a diagnose on the random CEL and unstable idle issue, turn out the EGR module is the trouble. Seems like it needs cleaning. ima wait to buy the oil sender to do it all at once. Hell my mechanic was amazed that for so long i hadnt came back! almost 7 months and when i came it was because of the exhaust coupling seal lol.
everytime i replace a part i feel kinda proud of having a great truck cuz it aint that often. it only had 1 week of purchase and the fuel pump died. considering it had 114,xxx miles i was like

they do last long!