Originally Posted by
KarmaCossie
I have tried the IK27's but they are expensive and don't handle high boost as well as the Autolite Racing AR3932 or AR3932X.
Ik31 on mine with 36psi peak.....
Trouble is when you just move ya car or a sheady puts it shunt it about.
The plugs will foul up quicker.
Ik27 is a good choice or the cheaper ngk bp9exi which i have and will try at some point.