All three are available. Your part number designation below is the piece that fits on the outboard edge of the aluminium shut panel. You need two, one for each side (not handed). $11-12 ea.
The large door weatherstrip ( HB Chris describes it best- it goes all round the door) : You need the left and right. But it certainly pays to shop around as they are expensive even though they've come down in price. 51716754282, left. 51716754283, right. There have been several posts discussing vendors and prices so a simple search will help.
DeQuincey had a pictorial of replacing the seal your discussing. I believe it was with replacing rocker trim. Worth a shot to look at how he did the work. +1 for DeQ.
Of course there are other seals as Chris says, but you asked about the al. shut trim on the door opening.
Yikes- the curved seal is $90. I agree with Chris.
Tip- if your seals just need recoloring- vinyl dye with proper prep.