I traded my 68 ss Camaro to a friend for his 87GN. It has a T63, Champion ported heads, Speed Pro cam, Alky system,Tweak chip, 50lb.Delphi inj., Built tranny w/3500 stall,Scanmaster etc. It runs 10.98 1/4 on et/drag radials. Now I have to meet emissions. I've always built older cars.......never had to worry about it before. I've read several remedies on this board but to make sure were talking apples to apples I wanted to list my specs. I have installed high flow cats and new oil change and filters. Since I've installed these cats...it will barely stay running at idle. Performance is down. Any help is appreciated!