http://www.306gti6.com/forum/showthread.php?id=119296&page=last
I'm pretty sure that the rearmost pair of mounts on 205/309 are similar but the threaded part is straight through/inline, where the rear mounts on the 306 has offset threads. Plus you will still need to sort the front mounts as just putting solids on the rear will almost certainly cause something else to snap as they won't be supported properly. Thats my two pence anyway.
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R H Davey Welding Supplies. I sell new and used welding equipment in the Hampshire area. I take on welding jobs in the evenings, ally casting repairs are one of my specialities but I can weld pretty much anything. PM me with your requirements.Some of my services: (See my for sale threads)
Engine mount/chassis repair
Solid Beam Mounts BACK IN PRODUCTION
Harness bars