Suspension swap, Swap 911/930 front suspension to my 914 Options

[spyder9014]

What are the benefits of using 911/930 front suspension on a 914.
I have installed gas shocks, turbo tie rods but I have seen it recommended to use the 930 front suspension. Is this just to get the brakes or is this for struts/brakes/torsion bars?
If I upgrade the calipers and rotors will it be just as good as a complete swap?

[davep]

There are quite a few struts used on the 911 and 914. There are at least four for the 914:
914/6 which is actually a 911 strut
914/4 up to late 1972
914/4 from late 1972
914/4 Bilstein

There are many for the 911:
very early up to 1968 IIRC, don't consider these
911T from 1969 same as 914/6 3.0" caliper mount
911E from 1969 3.5" caliper mount but hydropneumatic
911S from 1969 3.5" caliper mount for aluminum caliper
and so on.

Various manufacturers made the struts: Boge, Sachs, Koni, Bilstein. Most of the caps are not compatible; thread pitch and so on. Even the length of the inserts can change. So, some adapter caps were made to accomodate otherwise incompatible struts and inserts.

The 911E hydropneumatic could be modified to use shock inserts at significant expense, but was popular back when. The suspension did not use front torsion bars, and most A-arms were not even splined to accept torsion bars. These suspensions are really only useful for the aluminum calipers they had IF that is the caliper you want.
About 1974 IIRC the A caliper replaced the S caliper for cost reasons and the 911 T and E were dropped, so the 3.5" caliper mount was standard. However, the underbody sway bar was introduced, also for cost reasons, and the through body sway bar was gone.

The steering racks were very similar, and I can't say there is any real difference. However, the shaft from the 914 must be used.