Hello! How far into the repair are you?

I see that you are not in chat, so here is what i can tell you:

On these motors, the cam gears do not have timing marks.

The crank does, however.

There is a notch on the balancer and a notch on the timing cover. When they are aligned, the engine is at TDC.

The cams are a different story and thats because the sprockets to not spline to the camshaft, the friction caused by torquing the cam sprocket bolts is all that keeps them from moving.

So in order to time this engine, you MUST have the special tools. They look like camshaft bearing caps, with the shape of the cam lobe carved out of them.

This holds the cams in perfect position so you can torque down the cam sprocket bolts.

If you have not dissasembled the motor, you "might" be able to get away with marking the chain to the sprocket and mark the sprocket to the cam as a reference,

however I never tried this (I always used the tool), so I cannot garuntee its validity

You can buy the tool from Kent-Moore (the distributor of GM tools), but I'll warn you, they are rather expensive considering what they are. My set was $250.

I would suspect that because the Saab is Turbo, it has a different cam profile than the ecotech

Also keep in mind that Saab camshafts drive accessories on the end of them and the Ecotech camshafts may not have the needed provisions for them.

But the Saab camsahfts don't have keyways for the Ecotech sprockets? The purpose of the tool is to correctly orient the sprocket to the cam.

timing marks on the gear in relation to the chain are irrelevant if the sprocket is not correctly placed on the camshaft.

Well, I can honestly say I have never done that, or heard of it.

So unfortunately, I cannot advise as to whether that will work on not.