Hi, I have a 2wd sapphire with water in the sump, I removed head and the Hgasket sealed great, Im running ARP stud and nut kit on 205 block, 145,000miler. Who can check my head and block for porousity and leaks under pressure etc? I want to find the route cause of this before selling the parts on as I hate messing buyers about . I have a new engine being built so parts are ready FOR SALE as soon as I have these items checked...HELP NEEDED Ta