The AR 53 may be to cold but it is better to start with them and go up one step hotter later As far as the total timing start with 32 at or above 1500 RPM and drive it, then try 34 total and maybe then 35 or 36, pick which ever one that works best in your opinion to use Some things are not the same appearing to all people the same way, what looks like 32 degree to me may look like 31 or 33 to you with the same timing light one the same day Bottom line is to start safe and work your way up to where you don't like it anymore, little bitty steps at a time