1) Cannot, for the life of me get the TV cable adjusted. Can I just shift it into 2nd whan I want a 'powerband'. Will this cause damage?

2) Both wondows and both door locks do not work. All fuses seem fine. Is there some type of relay involved? Other possible causes?

3) Who makes an inexpensive header and Y pipe combo that mates up to my stock exhaust.

 

For the headers, you might want to look at hookers, and not the atlantic city kind. Between Edelbrock, hooker, and hedman are all low{er} priced headers that you can find on summitracing.com. I was thinking about getting SLP ceramic coated which are like $650 which I found in a year one magazine. As for the door locks I dont know, sorry

 

Chances are you have the TV cable that will self adjust. Push on the D shaped button and pull the housing out. Away from the linkage. And them mash the pedal to the floor. It will pull on the cable till it stops and then pull the housing the rest of the way to give you full cable movement and be tight.
The widows and locks might have circuit breakers. There should be two small silver boxes on the fuse panel. Pull them out then reinstall them to reset the breaker. Sometimes these get hot and work when they cool or they need to be unplugged.