A few years ago I bought Trumpeters SAM transporter. I made the mistake of getting the Chinese version. Could I take the ICM kit and use the towing gear from the Trumpeter kit?

Looks like it to me.

Here's the chassis of the ZiL-131 tractor version (a.k.a. ZiL-131HB):



You can compare it to Trumpeter kit parts...

Here's a view of a Romanian Army rig :



Full size

There's a walkaround of Duxford museum SA-2 (as pictured in Gino's post) on Primeportal :

http://www.primeportal.net/artillery/de_craecker/gaz_sa-2_walk_1.htm

H.P.

Be careful, because you do not have the same missile.
The first and original Russian version of the V-750 was Dvina, I copied the Chinese comrades (without permission of course), gave this version of the Trumpeter.
The V-750 transport Dvina-vehicle charger was the Zil-157 tractor.
The indoor museum shows a mixed thing you can see is not real life.
The later was renamed the upgraded version of the V-755 Volhov, this tank charging vehicles already have the newer, Zil-131.
The two missile roughly the same size, but different.