Are these iron or aluminum? Are they Girling?
What is the bolt mounting spacing to the spindle?
Tell us more about these Maserati calipers please.
Yes I would say that the aluminum spacer is the unique part for the Group 4, 18/4, 16/4 brake calipers.
Problem is Girling went out of business a while ago and someone purchased rights to the parts. These are all million dollar race cars and "continuation" cars that they are being built for now.
The Girling 18/4, and 16/4 aren't exactly earth shattering technology. They were used on the Ford GT40's. the Lola T70 and other GT race cars.
Frankly if I didn't know what they were used on I'd think that the pistons were a little small for the fronts just looking at them, but hey, who am I to argue with success?
There are definitely better calipers made now but the 18/4 & 16/4 are ORIGINAL VINTAGE yestertech for the European GT race car set of the era.
You may also find them fitted to some of the Group 3 Panteras too. The problem with the Gp3's is that Detomaso didn't document them well and they are subject to individual customer preferences.
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.