Moved to the correct section.
You've got to watch where you are posting, there are descriptions at the top of the page for each section.
When you do a top swap what do you need besides the m90?
In lamens terms would be great, what the hell does heads up mean?
well heres a brief list off the top of my head all the parts are off the L67 engine
lower intake manifold
heads
supercharger
throttlebody
pulleys and idlers
harmonic balancer
fuel rails and injectors
i went the ZZP M90 kit route and i didnt need half that stuff, but i spent about $1200 for everything, shop around and save money!!!