My van is solid on everything but the inner sills, sliding door track (lower), and the lower front panel where it meets the deformation panel.
I can weld pretty well (but want to improve). I have access to a mechanical workshop with a car hoist and quality snap-on mig welder etc.
So I'm gonna bite the bullet and have a crack at re-doing this all my self.
I have read all the post's (in the past) for un-stitching the old sills and replacing them. Although I can no longer find them

The sliding door side lower outer sill panel is completely shagged (has been patched to within an inch of it's life), the sliding door lower track rail has got so worn that it has got 'lumpy' and even got some holes in it along the way, and the inner sill need replacing. So I have got in my head that it pretty much needs a new inner, outer and sliding door guide panel.
But what I don't know is and I was hoping to get some advice from someone whom has done this before, ....is it easier/better to try and fit a genuine vw complete Outer sill part (which already includes the door roller channel etc like the one supplied by brickwerks) as one piece? Or is it better to buy the separate panels to make up the complete sill, and then 'stitch' them together 'piece meal' as I reconstruct it? My thinking is that buying the separate panels, may offer me better or easier opportunities to weld it all back into the fabric of the vehicle better, than just trying to get access to fixing points to say the front outrigger or rear cross-member etc, which may be denied me with the more fuller/complete VW outer sill panel?
...does that make sense?
Any advice from someone whom has done thsi repair before would be most welcome.
