Happy Friday,
Its been a while since I posted but I wanted to share this incase others interested.

I just added a 4L80e to my 72, already had a Holley Super Sniper so I just bought the trans controller and harness..plug n play -works amazing - and no Modifications needed to trans tunnel. Shortened the driveshaft, used Transdap adapter plate, properly spaced the converter and I was done. Now that the trans is in, I needed an electronic speedo so....after a long search and various what if's I landed on SpeedHut 3 3/8th speedo and I chose to upload a custom logo, the result looks great.

I also had one of the guys I work with make a custom 3D printed adapter ring as a step down so I could install as seen here. (Final assembly I will glue the adapter ring to the backside, right now its a good compression fit)

 

Nice work, I guess before 3D printers that would have been done by a machinist on a lathe. Looks good.