Well couple months back I saw Dyno don was offering Y-pipes for SLP headers and I ordered one received it yesterday and I am impressed with the quality!
and last night I found this thread:

Dyno Don closing shop

I was happy about the parts he makes for myself and other 3rd Genners then saddened that he's hanging up his welder and starting the easy life of retirement
I just wanted to say a BIG THANK YOU to Don for all his support and he will be missed, now it will be harder to find quality headers for our cars
now get started or finish up your bucket list will ya

 

hopefully, folks down in so cal will throw him one heck of a hot rod party!

 

Top Down Solutions is still offering build-to-order pipes by Dyno Don. Someone took over?

 

No. Shop closes in Sept. Orders will be cut off at some stage here.

 

It's funny how many people think retirement is so easy , take it from someone retired , you'd be amazed how days have a habit of getting filled with all kinds of stuff that can sometimes feel just like work . Only now ya ain't gettin paid for it

 

I'm ready to give it a go - more time in shop playing with cars
6 more years for me though

 

He posted up on FB a few months ago, and in the regional forum I think. I was gonna order a set at some point but quickly snagged a set I found here on the classifieds when I saw that post. Good luck to him!