[Sean Hamilton]

Be it mechanical, trim or body - scrupulous maintenance (audited, recorded and proof receipts) is what keeps the value up on any classic.

It's been my experience that "Mod's", unless they were a genuine factory OEM option or known and proven genuine bug fix, will generally detract from the value of a stock classic.

But the car must a "desirable", a "collectable" to warrant such restraint. I'd reckon any 930 probably falls into THAT category.

Still, life is short .......so yeah, what Robert said.