Hi ya'll! I have a 1982 firebird with the old 305 and got a chevy 350 crate motor for free! I was wondering if there will be any modifactions to the old bird i'll have to do? I want to put headers on the motor! but can't figure were to get'em any help would be greatful.  

No that will be a easy swap the 305 & 350 chevy small block use the same engine mounts and brackets, power steering pump,and pulleys but you will need a different flex plate and balancer. For the headers try summitracing.com