Once more - straight line is not of my concern. Take it to SS and we'll what car is worth

Escos was build for rallying.
I drove Vectra 2.0T GTS yesterday - nice car for carring your ass around but would pay for it so much it costs.
I have small turbo Escos with little or no tweaks in the engine and I can keep up with Imprezas STi which are MUCH MUCH more modern. remember that Ford-Cosworth cars are early 80's technology in fact, I would expect Cossie to be like an Evo. Either you buy 21st century technology or rally legends of early 90's. It's like you expected 60's Ferrari to beat todays Lotus or something.