200 Carbs on a 150 Merc

[150 VAMP]

Does it really make a differance ???

[brotherxb03]

You don't need them unless you cut the ports to 200 spec's.Mill your heads,lightweight flywheel,Match your exaust ports from you power head to tunner plate. Also rejet carbs. You will have to run premium when your compression is up to 140 ish.