Just had my 340 done by Jasper engine works. They do an amazing job and document everything, all steps from Disassembly to Dyno. They have a separate division called Historic (?), and a guy named Darren runs the division. Cost: 7K
Change to Rally Insurance after many years at Condon and Skelly. Found them to have much lower premiums, and higher stated values. Just did this, so no track record... SM