I'll add....
Going from logs to these oversize ram air manifolds involves the same b.s. as installing headers on a F body, you must remove the starter & oil filter & housing or remove the motor mounts and raise the engine way up. Theres also a few bolts that are damn difficult to tighten...just like headers.
I've read on forums how much easier these are to install...not so on a Firebird.
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2 sons, 2 Firebirds. 1971 Formula 455, 1972/w 455 HO added.
1974 Formula 400 "retired", parts car now.
