My dropout space is 148 mm- steel frame only 16 inch (weird build, all the main triangle tubes are different sizes.)

Thanks for the info, the 5 speed chain ring seems close enough to try, spaces are very close-though the teeth line up between ( peaks-valley other ) when the anchor holes are lined up.
I was looking at a rear cluster with a bail out gear I believe it was called.
Should do fine- 7 and a rear granny gear for hills.

My seat tube is oval at the bottom and with no front dérailleur you can see the shape nicely.
Since I'm going to wear this ring fast I will be purchasing a HQ chain ring soon, read bad stuff on BlackSpire- Any recommends on quality rings? (I like old racing parts rather than laser etched graphics- tried and true.)

No bmx chain ring bolts, Ya- I thought to ask that one too.
The old guy wasn't there-Hans, his minion didn't care to go look really- So I wasted his time extracting pertinent info.

Single speed is getting pop for road here and some people are going single front on small mtb frames, A bash guard on either side of the triple and I think smaller than 36 t mid ring. ( I'll be going higher-39 and shorter crank arms to speed up the revs! ) like big bmx.

Going to try the alternate ring tomorrow and I got a suggestion from another post of grinding the teeth off a 46 ring as a bashguard.....
and we got a grinder.
Jef.