"Rustproofing"

[Hamish400]

I have recently renewed the outer sills on a 944.

I would like to get the inside of the sills treated with
Waxoyl, Ziebart or similar.

I would prefer somewhere with proper pressure application lances etc, rather than use the Waxoyl DIY equipment myself.

Any information about who might be able to do this in Ayrshire/Glasgow/Central Scotland would be welcomed.

Rgds
Hamish