I am putting my 331 together and want to know how to get the timming set pretty close for start up, Its a new intake so I have no marks to line up on the distributor. I have the timing cover off, Number 1 at TDC and the timing marks lined up. Do I just drop in the distributor with the rotor pointed at number one??? One other thing what thermostat should I run, a 180 sound good???