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Thank you to all who responded! For Rumblefish360; engine is a ’99 5.2L Magnum. Block is bored over 0.03” with a higher duration cam (duration @ 0.05 216 intake/224 exhaust), hypereutectic pistons, heavier (LS1) valve springs, and double timing chain. Intake is a Edelbrock Performer air-gap...

Greetings! Haven't been back here for a long time (illness, job hunting, life). Have a question on my '73 Duster project. Engine will be a warmed-over 5.2L Magnum, question: what should I run for exhaust? I've heard the stock manifolds will not fit the A-Body engine bay without "persuasion"...