I too was going to build my own, but when Desertstang PM'd me that he was selling his project car, I jumped on the offer to buy the rotisserie. I know they go for less sometimes, but he did a nice job and it was like new, never left out in the rain.
It has an indexing wheel, however the holes are not perfect so sometimes, only one side can lock in.
Here's my advice after using this one.
Buy the indexing wheel. Even though it is so balanced that it will hold any position, once you lean on it it wants to spin.
Buy quality wheels so they don't flatten. I have a double scored concrete driveway and have pushed my Ranchero all over it, inside and out for power washing. I wouldn't go with the large wheel barrow wheels, unless you are on dirt or gravel, they'll bounce when you work on your car.
Go hydraulic! I jack this thing up and down all the time to get the best angle for whatever area I'm working on!
You don't need pins if you buy the plans from the guy selling the laser cut indexing wheels as those are the plans that this rotisserie is built from and it includes infinite height adjustable lock down bolts, so the vehicle doesn't slide down after you jack it up. With pins, you are limited to locking only where the pin is.
Here is my mod to the indexing lock down pin. I added a piece of angled steel to operate similar to a bolt action rifle. You pull the spring loaded pin and lock it into the angled steel. Since the Rotisserie has 2 indexing wheels, you do this on both sides, then position the car and release the bolt into the indexing wheel and your car is locked from rotating.
Finally, after some adjustments, I was able to load the car on with the front and rear suspension in place!
I rolled the front rotisserie into place and bolted it to the jack mounts, then did the same for the rear. Jacked up the hydraulic jacks, THEN removed the front and rear tires. Next, out came the rear axle and then the front suspension. No jacking on the car to mount it to the rotisserie, so it was a ONE PERSON job, which around here, can make or break a project!