I'm installing a new Lokar firewall mount transmission dipstick and was hoping someone could help answer a few questions I got. It says to use automotive silicone when putting the bottom in the transmission, what sort of stuff do they mean, like permatex? Also what do I use to mount it to the firewall, I mean are there special screws I use. It's a TH350 transmission in a 78 Malibu. Thanks for any tips.