1970 Boss 302 Engine (San Antonio)

I’m looking for information about the 1970 Boss 302 Engine I traded to the Owner of San Antonio Machine and Welding Shop around late 1977 or early 78.
I was stationed at Fort Sam Houston and He was a Drag Racer who quit Racing after a tragic accident at the track where someone crossed the track and was hit by his race car.
Anyway, I heard that his son killed him and is in prison or was.
His Brother took over the business but most recent info says the Machine Shop Business was sold and now a retail business is there off Interstate 10.
Any information would be greatly appreciated.
I still have the Boss Mustang.
The Vin Number on the Block is 107319.
I know it’s been a long time but talk to friends to see it it is still around.
I traded the block, crank, Rods with pistons, Heads, intake, Valve Covers and probably distributor, Carb, alternator and more.
Thanks, Mike in North Carolina show contact info .