my 98eo had a two bolt flange with spring loaded bolts also but when i fitted up a 00svt exhaust it had three bolt with a flex-pipe,so i just replaced the y-pipe and all


EO 98 CSVT, black, gunmetal exel 18s, H&R springs ,custom grilles, 35% tint,Hightower headlights,resonator removed,Magnaflow installed,FMS 9mm wires,K&N,Redline MTL 2000 Impala silver 2 inch drop 17 inch Exels