Well I have had many dealings with Tim, never a problem.
I looked over his add it's hard to tell if it was a mass air roller or not. And only seeing one side of the story it's hard to tell.
But if i was gonna buy it and had plans on using the mass air i would have checked when i was there dark or not.
I also see his set up was for a carb set up. So none of that stuff is needed not even the alt harness if he was planing on using a 1 wire alt.
I guess we all have diffrent views of rollers, When i bought my roller it was just that a shell on 4 wheels with 1 seat in it. It was dark but we took flash lights and looked over the entire car.
I see nothing shady about his add. Unless it was a personal conversation between you and him and that's all here say.
I'm not defending him only reading his add. It says roller, not a 5.0 roller, 4 banger, mass air car, etc. If i was going to buy it i would be expecting exactly what he listed nothing more nothing less.