Are u just taking the head off and fitting the wrc gasket?! Cos the head and block face both need to be nice and flat when fitting a metal gasket....

Danny, just out of interest going by what u said is it worth me bothering to fit my 10mm one to mine before I book it in and bring it up to you guys?! Heads ported so needs a remap but it's also got a 2wd ported inlet too. It's also running greys and a t34 .63.