Question: does it have an ab cruncher and a preacher curl?
Answer: It does come with the preacher curl attachment, yes. It does not have an absolute crunch station but you can do weighted abdominal crunches off the high pulley.
Question: how big is this unit? how wide and tall?
Here you go!
Assembled Dimensions: 84"H x 78"L x 70"W
Question: Does it come with the weights for pulley system and if so how much weight?
Answer: Series 7 Lat Attachment features a precision machined 210 lb. alloy steel weight stack with "Add-On" weight posts for individual free-weight plates. The adjustable low row foot brace allows maximum pre-stretch for all size users. It also includes Lat Bar and Low Row Straight Bar.
Question: Does it come with a weight set?
Answer: It comes with a 210lb. stack with 10 lb. plates. This allows you to use the lat, pec dec and and low pulley. You will need to purchase weights for the 7ft. bar. Most of our customers purchase a 300lb. Olympic Set which comes with a free-weight bar which you can drop onto the gun rack 'hooks' on the front of the rack. You can use either the smith bar or the free-weight bar for squats.