update

i used a normal gasket , i was affraid i was going to have to remove it ,, its all well no leaks ,, now on start up cold , i was getting 45 to 50 PSI ,, after hot running about 180 to 190 deg it was about 15 PSI but as soon as i give it the gas it shot up to 40 or so maybe more ,, , so i am going to drive it for a while and see what happens ,,
thanks to all the guys that give me info several times ,,