[Mellis46]

To get anywhere near that target you'll surely have to go down a turbo route? If you are sticking with contemporary engines from the Audi stable the 2.2 20vt from an S2/ urS4/S6 is the most trodden path, although there are a myriad of 1.8 20vt projects too, usually sourced from A4 etc.

To put into perspective a normally aspirated 5cyl 2.2 KV well fettled with a port/polish, big valves, aggressive cam etc is good for 170/180, hence why the 2.3 20v 7A engine is also a common transplant, as you get that "out of the box"...