4651 vs 5051 headlights

Hello, I  seen a lot of cars, dealt with a ton of issues, BUT never seen this. I got an 86 LeBaron, the headlights are pointing all over the place.No problem, right? I take it all apart, and the little glass lugs on the back of the bulb, where it sits in the headlight basket, are on the wrong side! Look at them.There are four lugs on the back, three small ones, and one fatter one, that fat one fits in one corner on the top. I don't have it in front of me, but I think the bucket on mine was on the top right side (As your facing the cars nose)But the fat lug on the bulb is on the left top side!! (I could just smash it down, but rather understand why it is)
all the manufactures say the the 5051 can be changed out with a 4651. seems to me, I am the only person in the world whose ever seen this, nobody I spoke with is even aware there are different size lugs on the back of a bulb. Neither was I two weeks ago. SO, I wish to replace these headlights with something a lot brighter. Perhaps, HID? at least H4 for now,
 second issue is, everyone selling "Conversion kits" does not understand that I do not need four of the same lights! I need two HI beams, and two HI/LO beams. Is it that difficult to understand? So, bottom line, I want to buy four lights for the LeBaron, But need two sets...that fit MY HOUSINGS, (Fat lug on top right, not left) and contain different bulbs for the HI and LO settings. Easy Breezy, Thanks for trying to understand this. IF I have the wrong Buckets, or the wrong BULBS, somebody please let me know. I am thinking the 5051 bulb has lugs on the top right. LOL?


OK, NOW I understand. I should had posted the ASAP, Whatever you do, don't ever have someone else start a job you will have to finish.
What "Somebody" did was took out all the headlight buckets and repainted them, and since they all look the same, they did not pay any attention to the left, right, outer or inner bucket. So, naturally when you buy a sanders replacement bulb it will only fit in the original bucket...no matter where it's been installed!
So, armed with this knowledge, you could install all Hi-Lo buckets across the grill and have four lo beams, and four Hi beams.  But why would you so that?
  Manufactures may not label the buckets for re-installation, but it's easy enough to figure it all out once you pull it all apart.
   
    You will find previos owners doing all kinds of mind numbing alterations to their vehicles without themselves ever knowing it! Then you get to figure it out, good luck.