"LPG? As in Propane? With stombergs? I had a 164 that had been converted to propane, and I put it back to gas, but it didn't work... the compression had been bumped up so high, I basically had to run racing fuel."

It's a mixture of propane and butane. Even though the octane number of LPG is higher than that of gas, they do not change the compression ratio here. Instead you get a bi-fuel system and go from the one to the other with the flick of a switch.

"Sounds a bit on the pricey side to me..."

Yes, after I get my research on pending costs done and still want to go forward with it, I will make a substantially lower offer.

"...you would do well to lose the strombergs and get some SU carbs for it."

Funny how everybody says that. I get along really well with the Stromberg in my Amazon. It's been restored to new condition, sure, but I'm careful of dismissing parts for poor performance when they're worn.