Ok, I just put a rebuilt 454 into my sub, and I am finding that the temp sender from the old engine doesnt fit the new engine. The sender is too small for the hole. Thru a little bit of research on this site, I found that the early(pre-80) heads have a larger port, and I think I found the Part # for the sender that will fit. BUT, will the larger sender work with the gauge in my "83? Is it going to be off all the time? If so, is there a way to correct that without replacing the gauge? I dont really want to drive the truck without a temp gauge. Also, what is the correct oil pressure on a 454? Thanks in advance!