Does anyone know if Penske offers a bolt in shock for a C4? I do know that they are widely in use, and *someone* has to be making the proper mounts for them. I have a great opportunity that has presented itself to me, in that a friend of mine has a Craftsman Truck team and when talking last night he offered me a set of four Penske single adjustables for $1,000, valved and dynoed anyway I want them. Now THAT's a deal.

Tom,
have you contacted Penski and see if they had had used ones for sale ?

How about maybe Mallet having used ones ?

Try Guy Ankeny--he distributes them in the west coast and all the SCCA winners use his calibrations. He has them for the C4 and C5. I am not sure of his web site but you might try www.sccaforums.com to start

Just curious, why Penski? Seems there's other options I would consider before dumping that kind of money into shocks that need modifying, but what do I know? Id go to a vendor that has shocks listed by size and shape, sounds like those shocks are modified truck shocks which may work as long as the travel is correct?

It does not have to be Penski as others may be OK depending on if car is raced or not

I can state Penski race shocks have been on my 1999 C5 since car was new and in all the racing over those years the shocks are still fine
Penski sells kits that allow the end user to rebuild or mod the shock setting for different way user wants them to function
They are multi adjusting and has external nitrogen canisters that allows even more adjustments as what pressure the nitrogen is set to

They are not cheap but in my case 19 years of hard use and still working like new reduces the overall costs.

Also the different models they have help, in my case the 99 is lowered, this means doing it right the shocks need to be shorter and they had a model for that
Also allowed the shocks installed upside down so less un-sprung weight and has bump stops to prevent bottoming out