Non of them have the jacking point strengtheners in them ..the strengtheners are in the inner sills. and are very poor to start with, no one makes proper inner sills ...only patch weld-over "L" shaped panels that go over them. which is a botch. they also dont have the drain swages.
The outer sill panels - yes, after using simple ones, (NO JACKING POINT TRIANGULAR INDICATORS) i strongly advise full panels ...
so you get both ends .........cut them down to what you need to take out.
I found a lot of rot in the centre/middle sill sections and centre box sections ......again no one makes these...and you are going to be fabricating stuff to replace these ....
inner, outer, middle and centre box sections are all made out of 20 and 22 gauge - very thin ....i replaced/ repaired mine with 16 gauge (1.8mm) and made jacking points from steel plate approximately 3" x 10" x 1/4" inch thick.
link
viewtopic.php?f=54&t=209329&hilit=outer+sillsI think all outer sill repair panels available are going to be 22 gauge 0.7mm because that's what the originals were.
Note: the full sill replacements have
a row of holes along them .....supposedly for drainage as the original .......I'm of the opinion that
they let water in as well as out .....which is why i made the choice of the smaller repair panels which don't have them - you pays your money and you make the choice ...its a hard one .
The original sills are of a bad design .....for long term ownership (
perhaps weld up these holes) if you are using the full sills .
You are in for a long and complicated job . if the centres are rotted .
All the best.mark