I've seen many headers on Ebay for 7M-GE N/A.
Also
Horsepowerfreaks.
Other sources available with a google search....
As for intakes, the 1JZ to 7M intake is popular, but requires very good aluminum welding..
And, for N/A, this set-up is WICKED
SICK!!!
Too bad a turbo upgrade packs way more punch than any of this. I'd save your money for a 7M-GTE or a 1JZ/2JZ swap.