I just purchased my 1st Toy home. It's a 90 Itasca V6. I have a couple of questions. Should I run a 180 or a 195 thermostat? I know the plus and minus of both,but not as they pertain to this vehicle. I'm installing an MSD coil for a "hotter" spark and would like a performance distributor cap and rotor ,but can't find a manufacturer. HELP Thank you.