nothing wrong with a gen1/2 3sgte at all!
throw a ct20b on there and you have a real weapon. Plus with lower compression you can run a bit more boost than gen3.
You only have to look at Alsw20 on TS (my old flatmate).. I watched him run a 12.6 with full weight gen1 SW20 that only had ct20b, downpipe, boost controller and panel filter done. Thats 4.6 seconds 0-100 in a 1250kg car with relatively minor bolt on's.