MSD Billet advance stop bushing info
 

MSD Billet advance stop bushing info largest is 18 degree any size info to make 16 14 12 10 bushings ?

You can take one of the bushings and get someone to custom make you different sizes. Or get inventive and make them yourself. That is what I did to taylor my timing.

That is what i am doing but need the o.d. for sizing. Do you happen to have a record of yours ?

Sorry Chrisp, I didn't write anything down on bushing sizes. I just had a few done, I believe in my case smaller.

4secondsflat i think was the place that offered lock out bushings, and at one time would custom make them
i bought a set and use it at the time i was using advance bushings, i have no idea where they are now since i bought them so long ago and had some moves inbetween
worked out nice too
one of them i needed to slightly file one side so it would fit
i don't recall what it limited advance to, but they worked out real well and were cheap
don't know what hardware stores are near you, but i gather if you have some time and patience you might be able to find some bushings close to the size and do a little filing.... i've seen internet posts that some did that

https://4secondsflat.com/MSD%20Distributor%20Tuning.htm

Excellent link