engines that fit in the ae86

[rsx]

hi.im new to the forum and i was wondering if we can make a sticky on the engines that fit in the ae86 and from what car must be taken out so that everyone that starts a project will find it helpful.for example i would like to know if an s2000 engine will fit,a k20a etc,etc.we should also state how difficult it is for each engine to fit what is reguired and how tunable it is.thank you.i think this will save u from us newbies a lot of time in answering questions