[Dominik]

keith,

i used them both on two of the same cars.

Correct is that the 5-pin TRIGO wheel is a little heavier than the 6-pin, but the adapter for the front axle (Jaguar) is a lot heavier than the adapter for the 5-pin.

If you are going to use a Jaguar axle. I do not know how the other axles are adapted.
But one i know for sure: as soon as you adapt a 5-pin drive to a 6-pin you need enough material thickness to bolt on the adapter because 5 bolts will always interfere with 6 bolts.

It is different for the rear because a new part comes with the set, that is why it is so expensice.

Plus: for the six pin version you have to mount the wheel bearings in the adapters.
I case you have already refreshened your existing parts you are going backwards.

You will need about 5.5" from the front fender to the wheel mounting flange to fit the (correct looking) 7.5" wheels and about 8" for the 9.5" wheel in the rear.
With 225/60/ tires front and 275/60/15 rear.
Just to put you in the ballpark.

There is almost no difference for these dimensions either for 5-pin or 6-pin.

Meaning: once you cut the axles to fit 5-pin adapters 6-pin may be used later as well.

Cosidering the huge engine torque applied to either, I see no problem with the 6-pins or 5-pins.

The 5/6-pins bolts are not exactly stressed in shear. Looking at 3 bolts that hold a flexplate from an automatic trans I always wonder why the did not shear off. The same with the 4 bolts for the drive shaft.
Somehow the friction of the mounted surfaces increase as RPM increases holding the parts together like welded. (Not really sure about that theorie).

But I would use 5-pins not only for cost reasons or that Lynn is a nice guy.

Dominik