Having cut away the rot there isn’t a huge amount left on the original middle sill. I’ve managed to keep the curved bit which the new panel doesn’t have so hopefully I’ll be able to make this work (I have to really as I’m not going to find another original middle sill anytime soon).
You can see the curved bit better in the below image (Annoyingly I had to drill out the spot welds on the sill too as I couldn’t drill them out accurately enough through the threshold piece. arg. More work).
My plan is to cut the new middle sill down and then weld it to the old so it looks something like this:
The curved bit is the challenging bit and will need a lot of fiddling and measuring to get right. Hoping to crack on with this tomorrow night.
