At 14:1 this is clearly not a pump gas engine street engine. That being the case I would probably elect to simply run a locked advance. Just to be safe and assuming that you won't be tuning it on a dyno I would start at 30* and run at least two runs at this setting. Bump it 2* and make two more runs. Repeat this until trap speed starts to fall off. Needless to say it's important to keep all other variables [ launch and shift rpms etc. ] the same. If running alky you could start at 32* If on gas I would start slightly rich on the A/F mixture. Good luck.