Like you note, depends on build date as well...mine (184) and Jeff's (173) were built original-style, but then Jeff went all blingy up front. Pat's (now Dave's) 185 was also built original-style chassis-wise.
Ron's (178), when completed in the year 2037, will be the most original of all, but will likely be converted to run on bio-diesel given the probable lack of any more refined petroleum products left on this particular planet by then.
