For Sale GX ported head and match ported manifold (Twin Dellorto) S/S Valves, New competition valve springs. Unfortunately I have no history on this head but have been told that it did a couple of seasons on a race car and had been crack tested (no problems). More than happy to have it re tested at buyers expense. NZ$1000 ono, a very well known engine builder said it would cost around $3k to take one to this stage. e mail
mcsdistributors@xtra.co.nz