Good lord you have retards working on your car.

There is more than enough room to do anything you need for a H/C swap with the motor in the car. I just finished mine last month basically by myself with only hand tools & it was my first time tearing a LS1 down.

If you are just dead set on spending the outragous amount on AFR, go ahead. Personally I'd save my money & go with TSP or Patriot. Plenty of cars out there layin down awsome numbers & E.T's on heads other than AFR.