Aaaaah, well it sounds like my 914 when I got it. In 1983 I bought an Anza, really heavy but sounded great. Loud. The Anza rusted out at the mufflers.
But I had a Monza for a 75-76 which is a lot lighter, cut hacked and welded the two together and presto, an exaust that looks like the old one, tucked up a little higher, breathes better and is really quite quiet with the monza mufflers. I put it on the car and started it, and for a few seconds I was wondering what that top end noise was. Tapets, it was my tapets that I had not heard in ages because the Anza was soooo loud. Maybe a Monza is what you are looking for. Thanks for sharing, I still in the pile of parts phase
@emerygt350