I feel bad I have the same year but JDM
All bodywork is sound luckily, has been undersealed too, will be locked up for winter!!
Shedding, not Zedding!
Id get it into a b shop sooner rather than later and get it all sealed, will be cheaper than 2-3 hundred when it gets worse in a year or 2..or less with the salt.
My FTO had the arches done inc welding at £400 was back 2 years later. But I winter drove it, they are still acceptable.