I don't know. I would just figure out where the initial needs to be and put it there. Likely it would have too much total at that point, but then you get the distributor out, weld and refile the slots. ......it's SO simple to do yet so many people lock up in fear of doing it. You don't have to worry about any fussy limiter plate to get hung up on anything or produce the wrong advance than what it's marked. You figure it out yourself and modify it accordingly. Everybody wants "plug and play" to the point that they don't want to actually do any work to get there and that always results in an underperforming engine. I run about 21 initial in my slant 6 and about 10 mechanical, plus "whatever" the vacuum can pulls in, which is about 20. Basically the same with the Ford 400 in my truck, but it has about 34-35 total, plus the 20 on the vacuum can. People get so scared of doing it and they don't stop to realize it's all grammar school geometry. Every bit of it. Just like degreeing a camshaft.