[hotrod_chevyz]

welcome to AF!

If the emissions system is still in tact just leave it alone. Get some better heads and a higher lift cam for it. Talk to a local muffler shop and ask what emissions it has to have in order to pass a test. If the block isnt wore completely out a cam and heads would get it a gob of extra power, and you wouldnt have to take the motor out or anything to do it. As long as you leave the emissions system in tact you shouldnt get any complaints from a inspector and you can still get some power out of it.