.....15mm wheel spacers for the front of my 73 teener. I want to eliminate a slight rub inside the wheel well from my 205x65 15" tires, have plenty of outboard room to widen the track up front. Only ones I have found were not hubcentric and created significant shimmy at speed. Do y'all have any trusted sources to recommend?

Try not to turn so sharp

https://www.uswheeladapters.com/hub-centric-wheel-adapters/

NEVER liked wheel spacers. Compare the length of your tie rods side to side. You might have a little adjustment room there. 914's bodies are KNOWN to be a little off side to side causing tire rub.

Thanks "sixnotfour," that is just exactly the info I needed, and the price is right!