Just had a reply on ED38 from TSR.
The car was running a rev limit of 8200 which would be madness if the engine wasn't built to take it. Any well set up mk2 on k-jet with a 1.9 and cams will make 180 bhp. We have set up for the golf championship cars running standard engines and a standard exhaust manifold that made 176bhp.
It is a bit of a shame we wanted to do a 2.0 but we were pushed on time we would have then got close to 200bhp and the torque would have been up. Unfortunatley it's a characteristic of 16v's with cams top end power.