I've had two 1970 Torino Twisters, 429 CJ, 4 speed cars, so I have some familiarity with them. In fact, a picture of one of them was just on here in the "Hot Summer Nights" thread from a couple weeks ago. There's a great back story to that car. It's a bit long, so I'll post that at some point down the road.
For this car in particular, are the engine and transmission both matching numbers? That's a biggie and will make a big difference in the price. Not all the engines had the serial number stamped on the rear of the engine block at the factory, so no serial number isn't definitive in and of itself. Then it becomes a question of what are the date codes for the engine and the heads. The date codes should be reasonably close to each other, and have to be before the build date on the car. If the date codes are after the build date of the car and there's no serial number on the block, it's might be a replacement service block, or another engine without an original serial number. If there's a serial number on the block that doesn't match the VIN, then the engine has been changed at some point. Also, Ram Air CJs with a 4 speed should have staggered rear shocks.
If the seller wants top dollar, he needs to do the usual things; put the mirrors on it, put the radio antenna in, put the decals and emblems on the fenders, put the hubcaps and beauty rings on the tires, etc. Assuming the body, floors, etc are solid and there's no rust issues, it looks like it should be a # 2 condition car. For a clean, good running # 2 driver, I think he can realistically get $35,000.
