power window & locks, speedo, and fuel gauge questions... sorry

[spaseghost]

okay, so i got the ok to spend all day tomorrow on my truck, yay me!!! so i gots me some questions.
1) Power windows - aftermarket kit, or what?

2) Power Locks - Keyless entry kit, or what?

3) Speedo - 275/50s, th400, 2.73 gears (from the rpo codes), needle dances like a gay irishman... new cable, or tranny speedo gear and cable? i always drive 5 - 10 mph over...bb powah

4) Fuel Gauge - damn thing dances worse than my speedo!!! the guy put in a new tank right before i got it, so i hope he replaced the sending unit... but i dont think he did, cause of the dancing. is that the problem/fix?

i wont answer anything unless somebody needs more info to answer me. im cleared from the boss to have all day father's day to work on the damn thing, so thats what im gonna do.