Drill and tap the sump for the temp sender and take a T-piece from the stock pressure switch for the pressure sender.
I have a cheap "biltema" T-piece, but you should be able to get it from ang hi perf store.
I've got pretty much the same setup including the "bilhelvete"
t-piece but I am not sure how accurate the temp gauge readings are as the wind beneath the car must cool the sump and the sender
(even that the sender is facing to rear of the car)