I have not been able to do anything with installing the alum head yet because other things keep getting in the way. Like putting up cypress planks in the house, working on & with a newley aquired backhoe, plus 3 other projects begging for work on them but it's all good.
When I installed my Dakota Digital dash I wound up moveing my sniper temp sensor from the t stat houseing to the stock dash sensor location in the block .I also changed to a 195 degree t stat because the temp was so low driveing in cool weather the sniper kept going into the open loop mode.
Do you remember what size plug you used to plug the oil passage in the block?