s12 s13 s14 interchangable parts?

[ONION]

ok, the sr20det gearbox fits the ca18det... so im guessing it fits the ca18et?
and if the ca18det fits into the s12 with relative ease.

how easy is it to fit the sr20det?
as the sr20det goes into the s13 with relative ease...

is there much involved in fitting these parts?

would it be just a case of bolting in the sr20det with either the ca18det box or sr20 and the complete sr20 loom?

what other parts can be fitted from either car?

i know the t28 fits by rotating the core and possibly fitting a spacer/flange
which also means the gtir t28 would fit...

does the ca18det head bolt straight onto the et block?

and the et head fit straight onto the det block?

would be handy to have a list of all parts and the difficulty level in fitting/ amount of work etc...