72 Demon AC

Does anyone know an aftermarket equivalent of all those missing things that can go somewhere else other than under the hood? The future plan is to fit a much bigger engine in this car and would like to avoid putting more things in there if I can.
Put a stroker crank in a small block it will be like a big engine but still small on the outside and without the weight of a "big engine'"....Original Air has under hood kits listed on their web site.