I was thinking about the 3100 series and I was thinking on getting one in the future... but now I am thinking about a '72 Chevy C/K SWB ( short wheel base ) possible 4x4. what insight would my fellow "bolters" or "Bolterellas" ( bolterellas is what I came up with to offer respect to lady bolters) have on these, say a '53 verses a '72 ? although I do like the 5 slat horizontal grill of the '47 to "53 , My most favorite body style is hands down the '72. one more bonus is the '72 is the same age I am ... lol Am I understanding correctly that the '72 had ,or had available a in line 6 cyl 250 or 292 engine? I would like to stay away from 8 cyl because my assumption is the 6 cyl. would have better gas mileage. I would appreciate some insight on this and welcome your wisdom.