Bob ,I'm not sure if we are ready,for a close up of your,rear end

i had a gymkhana (6 leaf !!!) on my 78  but i went for the monospring from vpb after all i have read about it ... as long as you don't really want to keep it original i would choose the mono

art-corvette

I bought my car with Triangle Spring according the sticker. Is this a stiff one ??? Anybody knows this one ?

What does a fiber mono on the ride quallity ? Is it worth replacing a almost new steel one ? ( fiberspring  and schocks.... )  

I have a 78 and switched over to the mono several years ago, and haven't looked back since.  The ride is so much better, and the upside is that its fairly easy to do.  So if one worries about orginality, to swap back can be done.  As far as handling goes, I do get somewhat aggresive in the mountain roads of the Adirondacks at times and the mono has it all over the gymkhana spring (which is what I had).  And it rides a lot better to boot.  During one trip I was following several C-5's who were pushing it in the twist and curves, and I pretty much stayed right with them.  But remember, even with your butt now sticking to the road, unlike the steel springs, the nose still tends to plow some when you get on it hard, unlike a C-5.  There is still a very big difference between the the C-3 and 5. 

You definitly won't be disappointed with a mono, if you do convert, change your shocks at the same time.  There are different levels of mono springs, mine is a #360.