ok so i'm new to this shit. anyways, replacing the engine in my 99 sunfire gt 2.4 l twin cam auto is on my list. what are some good brands? i've noticed ecotec on the forums a lot, but is that it? and is there anything that might be designed for my car that i wouldn't have to make custom parts for? i just don't have the access to most of the tools or materials needed for that sorta shit.