Swiftster has a few points there, but the decision to get a 700R4 shouldnt be that bad of a hurt. Most Chevrolets with overdrive beyond about 1990 would have a 700R4. the 2004R is also an option, but not a good one. As for the conversion from V6 to V8, i belive that you can grab most of the harness from your donor vehicle and tansfer it to your camaro. If you decide to go carburated, you may want to look into your local emissions laws. Some states still test emissions back for 20 years. However, it does seem odd that your changing your transmission to a t350. What transmission is currently in your vehicle? I belive that some 6's came with a t350 or 200. You may want to check. Remember, if its vacuum modulated, its most likely a 350. TV cable indictes a 200 series. or a 700R4