Edit: Finally adding pic... These have the same bolt pattern and offset as 411/412/early 914 calipers..
...Meaning they are a direct bolt on for a late Type 3.
The only thing somewhat futzy about them is they are dual circuit, so you need a "T" and 2 brake lines.
I reused the old lines that I has oh-so neat on the Pile 914, so they lines are fugly, will redo as time permits.
I had to use a thick hardened washer under mine, but I had machined 1/8" off the mounting surface of the calipers to fit late 914.
I bought them rebuilt at Oreillys a few years ago and ate the core charge.
TIP: Take them apart and apply synthetic caliper grease under the seals or they will rust in use. The rebuilders assemble dry...
It not surprisingly stops like the 914
... I'm hoping they won't be too much in the wet.(bigger rear wheel cylinder might help, if exists, IIRC the std T3 rear cylinder is the bug front)
Still making a support bracket for the "T" where the original hose connects, pics will follow.
