Bought salvage 2005 Prius with 35,000 miles

Well, I have had the Prius on the open road. Everything works fine except I need to deal with the air bags and the selt belts... Apparently this is no easy change out the seat belts deal here. There is a extensive undertaking to repair this. I bought the complete setup- driver steering wheel air bag - passenger dash air bag with the computer module and BOTH entire selt belt setups.... WOW! did not realize a front end accident pretty much takes out the entire air bag /seat belt system! You have to REPLACE EVERYTHING... and I kept thinking it was just the seat belt itself.
Wondering if there is a nice step by step procedure for replacing that system in here. I have done a few search's but no luck so far. The charge for the complete front air bag system was $550. Now I need to follow {I am sure} a procedure so I do NOT energize the system while installing.
ANY HELP HERE GLADLY APPRECIATED! If you know where there is a good thread here on this subject please let me know or if not is there anybody out there that tackled this project?