Suspension

[billjackson54]

My Sierra-based Cabrio, like Chris's, has tubular steel fabricated wish bones....but I replace the front coilovers about three years ago . Looking through the paperwork, I found the reference DAMPERTECH ref 130/090 B12-2

[John_Mulvaney]

I recently replaced the front dampers on my Sierra-based Cabrio like-for-like with pf974 units from AVO and which took around 7 weeks to manufacture.
These units have a welded-in spacer and are specials specific to the Cabrio and were one of the various makes offered by Marlin.
Swapping the springs was a little tricky with limited space between the spring and the damper body.
My thinking is that tubular wishbones superceded those with a rectangular section to eliminate sharp edges as required by IVA/SVA - rectangular wishbones are present on my pre-IVA car.
John

[chris_cussen]

The change to tubular front wishbones happened a long time before IVA. I bought my kit in 2003 and IVA occured in 2009.

[John_Mulvaney]

Got my SVA's and IVA's muddled Chris!
My Cabrio was (just!) registered pre the 1998 SVA test and hence also avoids emissions limits (just the visual test) even if as a Q plate I will always need a MOT.
Like the 5 spoke wheels - mine has TSW's, similar to yours but with a cover over the fixings.
John