Need some advice 318 POLY vs 318 LA

Absolutely the difference is the heads. It's not far off from the LA weight at all. Not as far as I thought. I do agree the width can pose some issues especially in a A body for exhaust. It can be done though, because people have put the 331, 354 and 392 in early and late A bodies, and the Poly is norrower. I guess it all depends on how hard you wanna work. lol
Oh, they fit- it's a squeeze, but they fit even in an early A.
@A56 posted these in another thread. Too cool!
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AND it's a four speed to boot!
And the recall wheels.
Overall, just a big ol' heapin' helping of awesomeness!