I ought to get me a**e in gear and put this in the workshop section.
I did RRR last year, don't panic it's quite easy.
You will find the inner sill a flat 3mm plate with a slight return at the top for spot welding and the front and rear mounts fitted. The outer sill wraps over the top of it (being part of the floor) then turns down for the sillouter, retuning underneath to close the sill.
If your floors aren't bad DO NOT buy ouoter sills, buy the repair panel from Paddocks.
Cut out most of the rot, I cut along the floor to just take outthe spot welds to the inner sill, that way the floor is resting on the sill but not joined to it.
you need to cut out the sill front and rear end, plus the triangulating plate across the underside of the floor (become clearer when you are underneath).
Remove the inner sill, replace the rubber mountings and fit the new inner sill. On mine the only thing it was touoching was the edge of the floor where I had cut it.
As soon as you are happy the inner sills are straight and vertical, weld along the edge of the floor to the return at the top of the sill. it may help later if you support the weight of the body somehow,otherwise it will be resting on the front and rear more than the sills.
Once the inner is one good and strong I then suggest you refit the outer of the sill with the bottom but leave the top face off for now, that way you can paint the vulnerable surface inside. The Paddock panel had the floor section on the front door but not the back, if it does cut it off just beyond the bend, for strength.
Once the outer is on I suggest you fit up the front and back ends, you can avoid a lot of crawling underneath this way. Also checko n any rust in the floor under the pedals/feet and beneath the rear carpets.
I finished off by fitting the strip of floor that covers the sill box, welding alongside the first weld of the floor to inner sill (this avoids a big rust trap) and from the outside so the weld was covered by the door rubber. i should say that I bent the floor to give me a return for mounting the door rubber, again it gives the panel strength but is also easier to weld as you are not welding the edge of a panel so don''t burn through as much.
You will probably find the A post rotten and the floor sections, these are cheap repair panels too but be careful not to weld the fuel or brake lines.
I'll try and post some pictures
