i dont personally like electric cutouts. guys play with them for the first few months. then they short out and never close right. then you have an annoying exhaust leak.

noting wrong with welding a 3" cutout on a 2.75" OEM intermediate pipe. it will flow fine.

i enjoy my OEM SLP catback with cutout (old school three bolt style) lol. plus it was 40 bucks installed.