AGP has good turbos, but the S256-RS will have some lag and a real short power band (spool at 3600). in order to get by the lag you'd need a built block and not the stock block. you could go with a standard AGP 50trim and acheve the same power level and have faster spool. with enough fuel and the right supporting mods you can get a 50 in the 500s range or go with a garrett 3076R and get lil more power and a lil bit quicker spool. it also depends on what your planning to do with the car, daily street driving or track whore.