heads and intake manifold set up for 318. j heads available.

hmm.. so, even though the j heads are available to me, i shouldnt get them? even if i had the compression to match them? i thought the stock 318 heads were restrictive at a certain point..

i guess ill hunt down a trade for an entire 360 (as trade for my buick), and just buy a towing cam, intake manifold and carb for my 318.
i could slowly build the 360 and mate it to my 904 later on..