Questions on finishing off my exhaust

I have a few questions about finishing off my exhaust. I want a Mac Prochamber o/r pipe, but it will throw the Check Engine light right? However, I seen in a catalog and ebay for "MIL Eliminators." (searched after lookin in catalog) However, the problem is that they are for 96+ only, not any 5.0's. I really would like to keep my check engine bulb, but will remove if necessary. My other question is on header selection. What would be the best headers? I wanted to go Mac, but after reading the reviews of people having to bend them into place, and leaking, etc etc, I thought about going BBK even though they are more expensive. Is BBK a good decent priced header? What size header for just a few bolt ons in just the near future? (bolt ons: exhaust, gears, pullies, shifter, and little stuff like that.) 1 1/2"? 1 5/8"? I am on a poor high school budget, and I want only the best mods for the best price, and still be daily driveable (for at least another year.) I now have the $ for exhaust, definetly a shifter, (damn you 3rd gear, damn you) pullies, gears, and some control arms, and then wheels/tires. Thanks. (sorry for long post)

Thanks for your help guys, so prochamber it is and I'll try some mac headers. You guys are the coolest.