I 2nd Harvey Watt. Just call them and ask what's available. Union plans are best, many times they have better terms with fewer limitations. Private plans are tough, better be in good condition. I did one back in the early 90's and Harvey Watt had a tough time finding an underwriter because my good/bad cholesterol ratio wasn't to their liking. And there's always the chance the physical could find something wrong that is grounding, although if it's that serious you need to know about it.
Understand that HW doesn't underwrite plans themselves, they manage the plans for companies that underwrite them.