Many thanks people.....
Twins I have been told that before but the coater seems to think itll be ok in the sump as its a high temp mix used with some sort of Du-Pont in it....HOWEVER...Seed in my head and all that...so i think im gna get the inside re shot blasted and just a coat of oil run around it....Nothing worse that thinking "is that coating ok in the depths of the engine after some time"!!!!!
Anyways once again thanks for the comments, and ill keep updating as i go!!!