This is a timely thread as I am looking to build a 944 ITS car. I've built a 951 for PCA, so am familiar with the 944 line. The 944S seems to be the way to go to be competitive in ITS. I'm familiar with 944 short-comings (#2 bearing, etc..) and I'm trying to figure out the additional shortcomings of the S model. I have heard about the timing chain between the 2 cams being a weak spot. Can anyone elaborate on that and point out any other things I should be concerned with?

Also, back in 2003 the 3.0 liter S2 engine was allowed in ITS if it was installed in a regular 944 car. Am I imagining this?

Scott