Since taking a proper look I think it may have been in a front tip before and the really rusty shit is from the donor car that was used to replace it. Everything else is really grand including the sills so hopefully the road ahead won't be as bad a journey as it might have been!
Can't wait to get her back on the road. I can't really remember what it was like to drive.
Incidentally I just did a load of suspension work on my 911 and the mr2 is so nice to work on in comparison.