EGT if you want to rip out your motor and tap your manifolds, but that would occupy two spots.
Wideband O2 would be nice.
"It must suck for you to be the most retarded than everyone else here." -AzHeat 09:30:20 09/10/04 "So I nailed it, took off like an F18 from carrier. Of course the chase begained." -Tim_N/A 10:27:15 04/07/03 "Ps, I ate a real chocolate jesus today. it was kick ass. it was about 3" tall and solid chocolate. I was in heaven." - niXit 10:53:48 10/02/02