I have an Accusump mounted behind the rear seat in my '65 Coronet. The Accusump is a bit of a hassle but it is nice to have oil pressure during a cold start.

Most cars will be just fine with a good oil pan. Once you start to really push the car hard in the turns you need a good oil pan plus the Accusump. When the car gets really fast you throw all of that stuff away and switch to a dry sump.

Tim's Valiant was on the edge of needing a dry sump. We tried a bunch of different oil pan designs in that car and none of them worked by themselves so we had to add the Accusump. The Accusump is a bandaid but it is better than blowing the engine. The move to a dry sump was just too big of a step to take.