i have a 2000 f150 4x4 ext cab xlt with the 5.4 with 163300 miles and i havnt ever got a tune up. i want to give it the tune up of a lifetime and i just need some suggestions on what to get, i also plan on getting a better throttle body and a throtle body spacer and a mass airflow sensor for it when i do this

 

A larger throttle body, spacer, and larger MAF will do nothing for you naturally aspirated engine. If you want to reduce restriction in the intake, do the Gotts mod. Here's the list I'd start with these in no particular order:
1. Global COPs and Motorcraft SP-479 sparkplugs torqued to 28 lb/ft dry (compression test if you wish at this time too)
2. Fuel filter
3. Motorcraft front O2 sensors
4. Coolant flush
5. Replace brake fluid
6. Transmission fluid exchange and filter
7. Inspect/replace serpentine belt (Gatorback for replacement)
8. Inspect exhaust system and heat shields
9. New shocks
10. Test battery and alternator
11. Replace differential fluid
12. Clean throttle body, IAC, EGR ports, and MAF
13. PEA fuel system cleaner if you don't use top tier fuel
14. Replace air filter (WIX, afe Pro dry)
15. Inspect brake pads, calipers, and rotors
16. Repack/Replace wheel bearings
17. Lubricate all joints in the front end and drive line if applicable.

 

i have a kn already so no gotts mod and i was lookin for more performance i already have good exhaust a kn and a programmer lookin for a tune up and more
power mpg etc

 

Efans, long tubes, custom tunes are about all the options for more power you're going to get from bolt on mods. Do all your maintenance before you go into modding more.

 

i would buy long tubes in a heartbeat but i have the whole aluminum block and stud bolt breakin problem any suggestions

 

An extractor kit is about the only thing if the break coming out or are already broken.