yeah x, you do plan to take out the pan right. it is better for the drain elbow to be welded, mine is not. just make sure that you do NOT make those bolt holes too big. use loctite for the nuts and bolts. apply a high temp permatex around the outside of the flange edge.......i did all that to lower the chances of leakage.......
as far as the vacuum lines......piece of cake. if u buy the gauge new, it should come with fittings and adapters. it should adapt to a barb end. the barb end will slip fit into the tubing. get some "T" fittings with barb ends from the hardware store or automotive store. peace bro
