hi which would be easier to do a 2jz-gte/160 swap?

a gs400 or gs300? i figured it would be the 300 but are they pretty much the exact same specs as far as bolting things on???

the diff is the same/different?

if the gs400 is just as easy, then i would like to pick up a 400 and save up for the swap. but if it's that much tougher than the 300 then maybe i'd opt for a 300 and put a turbo on it for now to satisfy the power crave...