[cadillacdeville]

if you wanted to remove the cat you could try getting a couple of 2 and1/2 to 3" clamps along with about 18" peice of pipe and cut that cat off and clamp the pipe on tighten it down should work fine also I replaced my muffler a while ago as the weld had totaly rusted away with a turbo muffler from dynomax but its 3" very open almost straight through sounds excelent with a good low rumble until the secondarys open then it gets loud very loud muffler was only round 40 to 50$ definitly improved the acceleration also replace that cap and ignition coil in there I replaced my cap with one from acdelco along with a ignition coil form acdelco with 8mm wires and plantnum bosch plugs all for under about 60 or 70$ the plugs i think were the most expensive plus get that 14" air cleaner you'll need to get some eltra spacer peices and longer stud but that stock air cleaner has an opening of about 4" whereas the edelbrock is 14" round and 3"high and will definitly let her breath in a lot better also look in to replaceing that carb ABC gets a performance rebuild
Q-jet from a place in california cost around 250$ but works wonders over the factory carb