You know, it really is up to you . . . on my 70 Sport Satellite, I got the body back from the body shop, and went to work getting all the brake lines, fuel lines, fuel tank on it, before getting the rear suspension on it, also, I assembled the engine and tranny on the K member, along with the steering box and lower control arms . . . also, before dropping the car over the engine/tranny/kmember, made sure to have the brake lines/metering block/prop valve, master cylinder all in place first . . . dropping the car onto the engine/tranny/k member was just too easy, and not required taking hood off, etc . . . pretty sure I got the ac/heater core installed prior to the engine also . . . oh, and the dash as well . . I had my car totally diassembled and rotiserie for body/paint work . . .

Really up to you . . . I wanted to get all items on the car, that are harder to do once you have engine/tranny/k member and rear end installed. Then once it was on wheels, you can do rest of it . . .

Good luck !!