This is another one that has been discussed at length here. Bottom line on that company, is that they don't answer phones, don't return messages, and don't answer email. I've tried...many, many, many times...
The only thing that changes year to year on that site, is the date at the bottom. It's too bad too, because I was really interested at one time in the Franklin 220 for my 7.
That's too bad, because they claim to have a -7 installation kit "coming soon" too ( http://www.franklinengines.com/rv7.cfm ). I like the idea of a flat-6 rather than a flat-4, mostly for the better balance and smoothness of delivery... and it's in the right weight and HP range. Is the factory in Poland any more useful for customers who want a Franklin?