Two things come to mind...
--if this is to be a street car, check you local and state emissions/inspection laws before pulling the trigger on a swap to an earlier model or different brand engine.
--go to your local cruise in, etc and pick the engine sound you are looking for, find the year, make, size and cam of that motor from the owner...then, scope it on the internet to see if your '08 can handle the dimensions and weight of the desired motor.
Back in the day when men were men and wiring harnesses caught fire (in my late teens and early 20s), I watched a lot of guys spend tons of money and time swapping engines/transmission combinations into all kinds of cars and trucks...it was cool, but drove home some early lessons I am happy to share:
--your engine swap is your own...resale is in the eyes of the buyer
--electrical/electronic systems become more problematic the newer your chassis/car or the further apart the year gap is between engine year/brand and car
--if you don't weld and do not have the proper equipment, you are going to hire a ton of work at $$s per hour
--exhaust systems don't fit
--cooling systems don't fit
--fuel systems may or may not work (easy back when there was one hose...not so much now)
--distributors are in the wrong place and require firewall mods
--power steering and AC mounts are a nightmare
--bellhousings, clutch linkages, shift linkages, throttle linkages, etc etc...all,part of the equation
-- on and on
But, were I to do it, and, $$s and laws not an issue...I'd pick the engine, transmission and rear end I desired, gut the old engine, trans
and front/rear suspensions, then have a competent chassis shop build a full chassis for the body shell to accommodate my power train selection. With that heavy and necessary work out of the way, I could then spend my time hunting the pieces needed to complete it, wire things up, etc etc.