not without a lot of work.
Yes. A gto is pretty much the same chassis as a chevelle, which was available with a 396, which is the same size and weight as a 454.
NO.
I bought a 2006 hood for my 2004 GTO and it fit perfectly. No problem what so ever.
yes it will
Yes.
no it wont fit. The body lines are different. A 66 will fit a 67
There is no such thing as a 1966 GTO Judge. This model was available in the model year 69, 70, and 71. Also the engine will fit in the engine bay, however all the mounts with need to be changed. Adapt mount kits are available from Summit Racing I believe. Also, depending on which transmission you intend on using, the engine will NOT bolt up to a Pontiac trans, however, again, adapt kits are available. Ask for a B-O-P adapter (Buick-Olds-Pontiac).
455 in the GTO.
I would assume so. I have a Chevy 454 in my 68 GTO, and it fits fine. I just used chevelle Motor Mounts. Bolted right to the a-body frame. However my hood on the 68 might have more room from the ram air set up.
no
Depending on what body parts you are needing, the 70-72 should fit. This would include the GTO and the LeMans.
The 2004 gto has 350 hp coming from the engine but that is not rwhp.