rumblefish's Duster project

I must have misunderstood. I thought you were using a 318,
I am

which have really small ports and are definitely smaller than on the LD340.
And the point is......drum roll please......it's the idea of just simple swaps. It has nothing to do with making things right, it's just a swap and see, a on the cheap, what happens if I do this or that, test and show.
The smaller head port will not be enlarged with the bigger intakes.
(That part I think I missed on your question. )
Except the 302 heads will be enlarged.

But theres going to be a few swap arounds. Just to see and show and run. For fun. A mix of 318 & 360 parts.
Theres going to be a mix and match of parts that will be "WRONG!" and it'll be done on purpose.

I saw 3, count them THREE small block Mopar intakes. One was a Performer II ($70 and dirty), one a TM5 ($100 and lots of paint), and a six pack setup (didn't even ask)

The performer would be ideal for most mild builds. The TM5 is a great paper weight or meltable metal for sci. class. It would probably make a nive meusem part someday.
Skip the 6 pak unless your going nuts.

The motor I've ended up with is a (supposedly) 66K mile 76 model 318. Would have preferred something older for compression,

You'll do fine with that and a head milling. While at it, back cut the valves and pocket port the heads if need be.

but chiggers can't be boozers.

Never heard that one. PM me an explaination. (This should be good.)

OK, back to the thread at hand..........................