hi all.i want to boost my opel monza gsi 1.6i's(1990) performance what can i use to compete with the new VW GTI.i do not want to modify the engine i have a really low budget and dont want to slap on huge turbo that will cost me a arm and a leg,and the having to modify the engine so it can take the pressure and heat that it will produce so i just want to do the basics on the engine maybe a small turbo,can any one give me ideas what to do.What are the GSI 1.6i capable of doing sum say they can run of the clock meaning like past 220km/h with a stock engine,is this true?