1985.5 944 and 951 trailing arms, same?
 

Are the rear trailing arms, hubs and spindles the same from a 85.5 NA 944 and 86 951? Also, will rear rotors and calipers bolt up the 85.5 hub & arm?

Just want to double check before proceeding or buying parts I don't need or may already have.

Thanks!!

I'm also trying to figure these details- I have got a set of aluminum trailing arms, part# 951.331.514.0 Are these definitely the narrow-track 1986 951 arms?

That is same part number I have from the 85.5. Looks like the part number search says it has been superceeded a few times with another 951 number? ***********.com says it fits 944 83-91. Checked Porsche's web part number catalog and they show 85.5 to 86 the same for 944 & 951. So my guess is they will fit? I'll try it and find out! Maybe the offset is determined by the hub and not the trialing arm?

trailing arm tech
 

Looks like a match. here's a site with some info on identifying the early aluminum arms- supposedly they have the caliper mounting ears cast-in, like our arms do, instead of on the backing plate.
http://www.vdubengineering.com/technical/conversions.htm

Re: trailing arm tech
 

Great!! Thanks!!!!!