Quote:
Originally Posted by Joshdub
Vac heads and a supercharger.
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VAC doesn't offer heads for the M62 engine. They might work on your existing heads if you can do without them or buy other heads to send them. The flow on M62 is pretty good and when you cost out headwork it will be even better. The value equation of performance gain per $$$ spent on heads is miserable unless on an all out racing engine. A supercharger kit will set you back $7-8 grand.
How much do you want to improve 0-60 time? It is pretty easy to give you a good idea how much you will have to spend and the best mods to get you there with that information.